diff --git a/snapshots/acp/cancel-tool-calls/session.v3.jsonl b/snapshots/acp/cancel-tool-calls/session.v3.jsonl
index ebec4022ff..8fc6caf6d9 100644
--- a/snapshots/acp/cancel-tool-calls/session.v3.jsonl
+++ b/snapshots/acp/cancel-tool-calls/session.v3.jsonl
@@ -9,10 +9,10 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
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diff --git a/snapshots/acp/cancel/session.v3.jsonl b/snapshots/acp/cancel/session.v3.jsonl
index d1ccc0b3ec..4f9426d2fd 100644
--- a/snapshots/acp/cancel/session.v3.jsonl
+++ b/snapshots/acp/cancel/session.v3.jsonl
@@ -9,9 +9,9 @@
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diff --git a/snapshots/acp/escalation-approved/session.v3.jsonl b/snapshots/acp/escalation-approved/session.v3.jsonl
index 40a4aee8a9..33b6fc7967 100644
--- a/snapshots/acp/escalation-approved/session.v3.jsonl
+++ b/snapshots/acp/escalation-approved/session.v3.jsonl
@@ -9,16 +9,16 @@
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diff --git a/snapshots/acp/escalation-rejected/session.v3.jsonl b/snapshots/acp/escalation-rejected/session.v3.jsonl
index f692fa0704..923e7e3e0b 100644
--- a/snapshots/acp/escalation-rejected/session.v3.jsonl
+++ b/snapshots/acp/escalation-rejected/session.v3.jsonl
@@ -9,16 +9,16 @@
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 {"type":"user/message","data":{"content":[{"type":"text","text":"The sandbox already denied writing /tmp/dsh-escalated.txt earlier (it is outside this workspace). Retry it now exactly once: one single bash call with the command printf 'escalated\\n' > /tmp/dsh-escalated.txt && cat /tmp/dsh-escalated.txt && rm /tmp/dsh-escalated.txt, with sandbox_permissions set to danger-full-access and the justification 'the user asked to write a file outside the workspace'. Do not run it without sandbox_permissions first. I will reject the permission prompt; after the rejection, do not retry and do not work around it — explain in one short sentence and stop."}],"source":{"kind":"user"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
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 {"type":"approval/asked","data":{"id":"{{approval:1}}","toolName":"bash","callId":"call_00_WB1vnPomi8yr6MlcFKTj7912","reason":"escalate sandbox to danger-full-access: the user asked to write a file outside the workspace"}}
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diff --git a/snapshots/acp/fs-escalation-approved/session.v3.jsonl b/snapshots/acp/fs-escalation-approved/session.v3.jsonl
index 00c4ed0283..c38078c779 100644
--- a/snapshots/acp/fs-escalation-approved/session.v3.jsonl
+++ b/snapshots/acp/fs-escalation-approved/session.v3.jsonl
@@ -9,16 +9,16 @@
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 {"type":"user/message","data":{"content":[{"type":"text","text":"Use the write tool (NOT bash) to create escalated.md in the current directory containing exactly the single line: escalated. An equivalent write was denied earlier, so make this one single write call with sandbox_permissions set to danger-full-access and the justification 'the user asked to escalate this write'. Do not call write without sandbox_permissions first. I will approve the permission prompt. After the result, reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
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diff --git a/snapshots/acp/image-compaction/session.v3.jsonl b/snapshots/acp/image-compaction/session.v3.jsonl
index 512983b66a..c463de2140 100644
--- a/snapshots/acp/image-compaction/session.v3.jsonl
+++ b/snapshots/acp/image-compaction/session.v3.jsonl
@@ -9,10 +9,10 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Here are six reference screenshots of the dashboard: "},{"type":"image","attachment":{"attachmentId":"sha256:b1ff9c8ea3a780bad09b346c423d2d0e46815926879b18e841d928376a946640","mediaType":"image/png","width":1,"height":1,"bytes":69}},{"type":"text","text":" (frame 1) "},{"type":"image","attachment":{"attachmentId":"sha256:b1ff9c8ea3a780bad09b346c423d2d0e46815926879b18e841d928376a946640","mediaType":"image/png","width":1,"height":1,"bytes":69}},{"type":"text","text":" (frame 2) "},{"type":"image","attachment":{"attachmentId":"sha256:b1ff9c8ea3a780bad09b346c423d2d0e46815926879b18e841d928376a946640","mediaType":"image/png","width":1,"height":1,"bytes":69}},{"type":"text","text":" (frame 3) "},{"type":"image","attachment":{"attachmentId":"sha256:b1ff9c8ea3a780bad09b346c423d2d0e46815926879b18e841d928376a946640","mediaType":"image/png","width":1,"height":1,"bytes":69}},{"type":"text","text":" (frame 4) "},{"type":"image","attachment":{"attachmentId":"sha256:b1ff9c8ea3a780bad09b346c423d2d0e46815926879b18e841d928376a946640","mediaType":"image/png","width":1,"height":1,"bytes":69}},{"type":"text","text":" (frame 5) "},{"type":"image","attachment":{"attachmentId":"sha256:b1ff9c8ea3a780bad09b346c423d2d0e46815926879b18e841d928376a946640","mediaType":"image/png","width":1,"height":1,"bytes":69}},{"type":"text","text":" (frame 6) Acknowledge receipt briefly; we will discuss them next."}],"source":{"kind":"user"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
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 {"type":"request/context","data":{"provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp","contextWindow":11600}}
-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"Received six dashboard frames; ready to discuss."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:4}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1788604752760,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1788604752760,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Received six dashboard frames; ready to discuss."}}},{"type":"chunk","time":1788604752760,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1788604752761,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Here are six reference screenshots","messageSeqs":[8],"source":{"kind":"fallback"}}}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"Received six dashboard frames; ready to discuss."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:4}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1788699393857,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1788699393857,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Received six dashboard frames; ready to discuss."}}},{"type":"chunk","time":1788699393857,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1788699393857,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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@@ -25,6 +25,6 @@
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+{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:7}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1788699393888,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1788699393888,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1788699393888,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1788699393888,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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diff --git a/snapshots/web/approval-composer/session.v3.jsonl b/snapshots/web/approval-composer/session.v3.jsonl
index b3d7d49b34..aa81175f9c 100644
--- a/snapshots/web/approval-composer/session.v3.jsonl
+++ b/snapshots/web/approval-composer/session.v3.jsonl
@@ -13,21 +13,21 @@
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 {"type":"user/message","data":{"content":[{"type":"text","text":"Write a file named notes.txt in the workspace containing exactly this text on one line: tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx. Use one bash command with the literal text inline. Then reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
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 {"type":"request/context","data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":128000}}
-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"approval-write","name":"bash","arguments":"{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788240719620,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788240719637,"index":0,"dt":[],"id":"approval-write","name":"bash","args":["{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"]},{"type":"chunk","time":1788240719654,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"approval-write","name":"bash","arguments":"{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"}}},{"type":"chunk","time":1788240719671,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788240719688,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Write a file named notes.txt","messageSeqs":[12],"source":{"kind":"fallback"}}}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"approval-write","name":"bash","arguments":"{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788699499012,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788699499028,"index":0,"dt":[],"id":"approval-write","name":"bash","args":["{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"]},{"type":"chunk","time":1788699499045,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"approval-write","name":"bash","arguments":"{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"}}},{"type":"chunk","time":1788699499061,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788699499077,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
 {"type":"tool/call","data":{"turn":1,"step":1,"callId":"approval-write","name":"bash","arguments":"{\"command\":\"echo 'tok63z tokc7y tokibx tokofw tokujv tok10nu tok16rt tok1cvs tok1izr tok1p3q tok1v7p tok21bo tok2a4 tok8e3 tokei2 tokkm1 tokqq0 tokwtz tok12xy tok191x tok1f5w tok1l9v tok1rdu tok1xht tok23ls tok4k8 tokao7 tokgs6 tokmw5 tokt04 tokz43 tok1582 tok1bc1 tok1hg0 tok1njz tok1tny tok1zrx tokqd tok6uc tokcyb tokj2a tokp69 tokva8 tok11e7 tok17i6 tok1dm5 tok1jq4 tok1pu3 tok1vy2 tok2221 tok30h tok94g tokf8f toklce tokrgd tokxkc tok13ob tok19sa tok1fw9 tok1m08 tok1s47 tok1y86 tok24c5 tok5al tokbek tokhij toknmi toktqh tokzug tok15yf tok1c2e tok1i6d tok1oac tok1ueb tok20ia tok1gq tok7kp tokdoo tokjsn tokpwm tokw0l tok124k tok188j tok1eci tok1kgh tok1qkg tok1wof tok22se tok3qu tok9ut tokfys tokm2r toks6q tokyap tok14eo tok1ain tok1gmm tok1mql tok1suk tok1yyj tok252i tok60y tokc4x toki8w tokocv tokugu tok10kt tok16os tok1csr tok1iwq tok1p0p tok1v4o tok218n tok273 tok8b2 tokef1 tokkj0 tokqmz tokwqy tok12ux tok18yw tok1f2v tok1l6u tok1rat tok1xes tok23ir tok4h7 tokal6 tokgp5 tokmt4 toksx3 tokz12 tok1551 tok1b90 tok1hcz tok1ngy tok1tkx tok1zow toknc tok6rb tokcva tokiz9 tokp38 tokv77 tok11b6 tok17f5 tok1dj4 tok1jn3 tok1pr2 tok1vv1 tok21z0 tok2xg tok91f tokf5e tokl9d tokrdc tokxhb tok13la tok19p9 tok1ft8 tok1lx7 tok1s16 tok1y55 tok2494 tok57k tokbbj tokhfi toknjh toktng tokzrf tok15ve tok1bzd tok1i3c tok1o7b tok1uba tok20f9 tok1dp tok7ho tokdln tokjpm tokptl tokvxk tok121j tok185i tok1e9h tok1kdg tok1qhf tok1wle tok22pd tok3nt tok9rs tokfvr toklzq toks3p toky7o tok14bn tok1afm tok1gjl tok1mnk tok1srj tok1yvi tok24zh tok5xx tokc1w toki5v toko9u tokudt tok10hs tok16lr tok1cpq tok1itp tok1oxo tok1v1n tok215m tok242 tok881 tokec0 tokkfz tokqjy tokwnx' > notes.txt\",\"description\":\"Write notes.txt with the specified text\",\"sandbox_permissions\":\"workspace-write\",\"justification\":\"Need to write the notes.txt file as requested by the user.\"}"}}
 {"type":"approval/asked","data":{"id":"{{approval:1}}","toolName":"bash","callId":"approval-write","reason":"escalate sandbox to workspace-write: Need to write the notes.txt file as requested by the user."}}
 {"type":"approval/decided","data":{"id":"{{approval:1}}","outcome":"allowed-once"}}
 {"type":"tool/result","data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"approval-write"},"content":[{"type":"tool-result","toolCallId":"approval-write","content":[{"type":"text","text":"(no output)"}],"isError":false}],"role":"user","id":"{{message:5}}"}},"sourceEventSeqs":[18],"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":1}}
 {"type":"step/start","data":{"turn":1,"step":2}}
-{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"approval-read","name":"read","arguments":"{\"file_path\":\"notes.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:6}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788240719868,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788240719883,"index":0,"dt":[],"id":"approval-read","name":"read","args":["{\"file_path\":\"notes.txt\"}"]},{"type":"chunk","time":1788240719900,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"approval-read","name":"read","arguments":"{\"file_path\":\"notes.txt\"}"}}},{"type":"chunk","time":1788240719917,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788240719934,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"approval-read","name":"read","arguments":"{\"file_path\":\"notes.txt\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:6}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788699499252,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788699499268,"index":0,"dt":[],"id":"approval-read","name":"read","args":["{\"file_path\":\"notes.txt\"}"]},{"type":"chunk","time":1788699499284,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"approval-read","name":"read","arguments":"{\"file_path\":\"notes.txt\"}"}}},{"type":"chunk","time":1788699499301,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788699499317,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
 {"type":"tool/call","data":{"turn":1,"step":2,"callId":"approval-read","name":"read","arguments":"{\"file_path\":\"notes.txt\"}"}}
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-{"type":"assistant/message","data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:8}}"},"usage":{"inputTokens":10,"outputTokens":2},"stream":[{"type":"chunk","time":1788240719973,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"text-chunks","time0":1788240719990,"index":0,"dt":[],"texts":["DONE"]},{"type":"chunk","time":1788240720005,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1788240720022,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}},{"type":"chunk","time":1788240720039,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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diff --git a/snapshots/web/cordis-tool-round/session.v3.jsonl b/snapshots/web/cordis-tool-round/session.v3.jsonl
index 323d3adecf..1df66acfd1 100644
--- a/snapshots/web/cordis-tool-round/session.v3.jsonl
+++ b/snapshots/web/cordis-tool-round/session.v3.jsonl
@@ -9,25 +9,25 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Use only Cordis tools. First call cordis_inspect_self with no arguments. Then call cordis_define with plugin kind \"new\", idPrefix \"snap\", name \"snapshot noop\", purpose \"does nothing, for the snapshot\", code.host exactly \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\" and code.client exactly \"return { inject: [\\\"slots\\\"], apply(ctx) { ctx.slots.register({ name: \\\"shell.overlay\\\", id: \\\"snapshot-probe\\\" }, () => React.createElement(\\\"div\\\", { \\\"data-snapshot-probe\\\": \\\"loaded\\\" })) } }\". Read its returned pluginId and packageId, then call cordis_run with those exact IDs and mode \"run\". After the run request returns, reply exactly CORDIS_UI_READY and stop."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
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-{"type":"assistant/message","data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The Host returned snap-1/pkg-1, so I will request its first activation."},{"type":"tool-call","id":"cordis-run","name":"cordis_run","arguments":"{\"pluginId\":\"snap-1\",\"packageId\":\"pkg-1\",\"mode\":\"run\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:8}}"},"usage":{"inputTokens":63,"outputTokens":72,"cacheReadTokens":16640,"reasoningTokens":23},"stream":[{"type":"chunk","time":1788240679850,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"chunk","time":1788240679867,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}},{"type":"chunk","time":1788240679884,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The Host returned snap-1/pkg-1, so I will request its first activation."}}},{"type":"chunk","time":1788240679901,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"cordis-run","name":"cordis_run","arguments":"{\"pluginId\":\"snap-1\",\"packageId\":\"pkg-1\",\"mode\":\"run\"}"}}},{"type":"chunk","time":1788240679919,"chunk":{"type":"usage","usage":{"inputTokens":63,"outputTokens":72,"cacheReadTokens":16640,"reasoningTokens":23}}},{"type":"chunk","time":1788240679934,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
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 {"type":"tool/result","data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"cordis-run"},"content":[{"type":"tool-result","toolCallId":"cordis-run","content":[{"type":"text","text":"snap-1/pkg-1 is awaiting user approval (run-1)."}],"isError":false}],"role":"user","id":"{{message:9}}"},"meta":{"pluginId":"snap-1","packageId":"pkg-1","pluginRunId":"run-1"}},"sourceEventSeqs":[24],"surfaceOp":"append"}
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-{"type":"assistant/message","data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The activation request has been submitted, so I will return the requested readiness marker."},{"type":"text","text":"CORDIS_UI_READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:10}}"},"usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22},"stream":[{"type":"chunk","time":1788240679970,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"chunk","time":1788240679987,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"chunk","time":1788240680003,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The activation request has been submitted, so I will return the requested readiness marker."}}},{"type":"chunk","time":1788240680020,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"CORDIS_UI_READY"}}},{"type":"chunk","time":1788240680037,"chunk":{"type":"usage","usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22}}},{"type":"chunk","time":1788240680053,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The activation request has been submitted, so I will return the requested readiness marker."},{"type":"text","text":"CORDIS_UI_READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:10}}"},"usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22},"stream":[{"type":"chunk","time":1788699479803,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"chunk","time":1788699479820,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"chunk","time":1788699479836,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The activation request has been submitted, so I will return the requested readiness marker."}}},{"type":"chunk","time":1788699479852,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"CORDIS_UI_READY"}}},{"type":"chunk","time":1788699479868,"chunk":{"type":"usage","usage":{"inputTokens":29,"outputTokens":30,"cacheReadTokens":16768,"reasoningTokens":22}}},{"type":"chunk","time":1788699479884,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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 {"type":"turn/end","data":{"turn":1,"reason":{"kind":"completed"}}}
 {"type":"agent/inbox/spliced","data":{"target":"next-step","start":0,"inserted":[{"content":[{"type":"text","text":"Cordis run snap-1/pkg-1 (run-1) completed successfully. currentPackageId is pkg-1. Continue using the running Plugin."}],"source":{"kind":"plugin","plugin":"cordis-host-runner"},"role":"user","id":"{{message:11}}"}]}}
@@ -35,7 +35,7 @@
 {"type":"agent/inbox/spliced","data":{"target":"next-step","start":0,"removedCount":1,"inserted":[]}}
 {"type":"step/start","data":{"turn":2,"step":1}}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Cordis run snap-1/pkg-1 (run-1) completed successfully. currentPackageId is pkg-1. Continue using the running Plugin."}],"source":{"kind":"plugin","plugin":"cordis-host-runner"},"role":"user","id":"{{message:11}}"},"surfaceOp":"append"}
-{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"The Cordis Plugin is running."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:12}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1788240680404,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1788240680420,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"The Cordis Plugin is running."}}},{"type":"chunk","time":1788240680437,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1788240680454,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"The Cordis Plugin is running."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:12}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1788699480237,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1788699480253,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"The Cordis Plugin is running."}}},{"type":"chunk","time":1788699480270,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1788699480286,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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 {"type":"turn/end","data":{"turn":2,"reason":{"kind":"completed"}}}
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@@ -43,11 +43,11 @@
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 {"type":"user/message","data":{"content":[{"type":"text","text":"Use only Cordis tools. Call cordis_stop with pluginId \"snap-1\". After it succeeds, reply exactly CORDIS_UI_DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpc:2}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:13}}"},"surfaceOp":"append"}
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diff --git a/snapshots/web/feedback-command/session.v3.jsonl b/snapshots/web/feedback-command/session.v3.jsonl
index de08df5452..23b742e4e0 100644
--- a/snapshots/web/feedback-command/session.v3.jsonl
+++ b/snapshots/web/feedback-command/session.v3.jsonl
@@ -9,10 +9,10 @@
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 {"type":"user/message","data":{"content":[{"type":"text","text":"Reply with the single word LIGHTHOUSE and stop."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
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+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with a single word. Let me comply."},{"type":"text","text":"LIGHTHOUSE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15},"stream":[{"type":"chunk","time":1788699508786,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699508791,"index":0,"dt":[6,6,6,5,5,6,5,6,6,6,5,6,6,6],"texts":["The"," user"," wants"," me"," to"," reply"," with"," a"," single"," word","."," Let"," me"," comply","."]},{"type":"chunk","time":1788699508876,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699508881,"index":1,"dt":[6,6,5,6],"texts":["L","IGH","TH","O","USE"]},{"type":"chunk","time":1788699508910,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to reply with a single word. Let me comply."}}},{"type":"chunk","time":1788699508915,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"LIGHTHOUSE"}}},{"type":"chunk","time":1788699508921,"chunk":{"type":"usage","usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15}}},{"type":"chunk","time":1788699508926,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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diff --git a/snapshots/web/file-upload-round/session.v3.jsonl b/snapshots/web/file-upload-round/session.v3.jsonl
index 176d86878d..98ce90b642 100644
--- a/snapshots/web/file-upload-round/session.v3.jsonl
+++ b/snapshots/web/file-upload-round/session.v3.jsonl
@@ -10,14 +10,14 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
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diff --git a/snapshots/web/fresh-round-trip/session.v3.jsonl b/snapshots/web/fresh-round-trip/session.v3.jsonl
index a113bb0710..4d79933945 100644
--- a/snapshots/web/fresh-round-trip/session.v3.jsonl
+++ b/snapshots/web/fresh-round-trip/session.v3.jsonl
@@ -9,14 +9,14 @@
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diff --git a/snapshots/web/lifecycle-chrome/session.v3.jsonl b/snapshots/web/lifecycle-chrome/session.v3.jsonl
index 2973e92514..8fb0d064be 100644
--- a/snapshots/web/lifecycle-chrome/session.v3.jsonl
+++ b/snapshots/web/lifecycle-chrome/session.v3.jsonl
@@ -9,9 +9,9 @@
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diff --git a/snapshots/web/live-interactions/session.v3.jsonl b/snapshots/web/live-interactions/session.v3.jsonl
index 9025280fa7..19063e1a84 100644
--- a/snapshots/web/live-interactions/session.v3.jsonl
+++ b/snapshots/web/live-interactions/session.v3.jsonl
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diff --git a/snapshots/web/minimal-preset/session.v3.jsonl b/snapshots/web/minimal-preset/session.v3.jsonl
index 20f8cfbd59..512a0a78c2 100644
--- a/snapshots/web/minimal-preset/session.v3.jsonl
+++ b/snapshots/web/minimal-preset/session.v3.jsonl
@@ -8,14 +8,14 @@
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-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"minimal-bash-card","name":"bash","arguments":"{\"command\":\"printf 'MINIMAL_BASH_CARD_OK\\\\n'\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:3}}"},"usage":{"inputTokens":10,"outputTokens":4},"stream":[{"type":"chunk","time":1788668790072,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788668790084,"index":0,"dt":[],"id":"minimal-bash-card","name":"bash","args":["{\"command\":\"printf 'MINIMAL_BASH_CARD_OK\\\\n'\"}"]},{"type":"chunk","time":1788668790095,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"minimal-bash-card","name":"bash","arguments":"{\"command\":\"printf 'MINIMAL_BASH_CARD_OK\\\\n'\"}"}}},{"type":"chunk","time":1788668790106,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":4}}},{"type":"chunk","time":1788668790117,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Use the bash tool to","messageSeqs":[8],"source":{"kind":"fallback"}}}
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+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"MINIMAL_PRESET_REQUEST_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:5}}"},"usage":{"inputTokens":10,"outputTokens":4},"stream":[{"type":"chunk","time":1788699487708,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"text-chunks","time0":1788699487719,"index":0,"dt":[],"texts":["MINIMAL_PRESET_REQUEST_OK"]},{"type":"chunk","time":1788699487730,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"MINIMAL_PRESET_REQUEST_OK"}}},{"type":"chunk","time":1788699487741,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":4}}},{"type":"chunk","time":1788699487753,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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diff --git a/snapshots/web/permission-policy-context/session.v3.jsonl b/snapshots/web/permission-policy-context/session.v3.jsonl
index c79028860a..36e4eb3f92 100644
--- a/snapshots/web/permission-policy-context/session.v3.jsonl
+++ b/snapshots/web/permission-policy-context/session.v3.jsonl
@@ -13,10 +13,10 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Can you create or edit a normal file right now under the current policy? Answer directly in one sentence. Do not call a tool just to discover the policy."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
-{"type":"session/title","data":{"title":"Can you create or edit","messageSeqs":[12],"source":{"kind":"fallback"}}}
 {"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"tools":"{{tools}}"},"reason":"initial"}}
 {"type":"request/context","data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":128000}}
-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user is asking me a direct question about whether I can create or edit a normal file under the current policy. They've told me not to call a tool just to discover the policy.\n\nLet me answer based on the current runtime context provided in the system message:\n\nCurrent DSH file policy: read-only. The write and edit tools and one-shot bash commands cannot modify files in the standing mode. However, the guidance says \"do not refuse a required modification from this standing mode alone: attempt it normally and follow the tool's denial and escalation guidance.\"\n\nAnd the Approval policy is \"ask\" - operations that require approval may ask through the configured answerers.\n\nSo I can answer directly: under the current read-only policy, the write and edit tools would be denied, but I can attempt an escalation with justification."},{"type":"text","text":"No — under the current read-only file policy, `write` and `edit` would be denied, though I could attempt a one-shot escalation with justification and wait for your approval."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":59,"outputTokens":201,"cacheReadTokens":14848,"reasoningTokens":163},"stream":[{"type":"chunk","time":1788240689971,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788240689972,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," user"," is"," asking"," me"," a"," direct"," question"," about"," whether"," I"," can"," create"," or"," edit"," a"," normal"," file"," under"," the"," current"," policy","."," They","'ve"," told"," me"," not"," to"," call"," a"," tool"," just"," to"," discover"," the"," policy",".\n\n","Let"," me"," answer"," based"," on"," the"," current"," runtime"," context"," provided"," in"," the"," system"," message",":\n\n","Current"," D","SH"," file"," policy",":"," read","-only","."," The"," write"," and"," edit"," tools"," and"," one","-shot"," bash"," commands"," cannot"," modify"," files"," in"," the"," standing"," mode","."," However",","," the"," guidance"," says"," \"","do"," not"," refuse"," a"," required"," modification"," from"," this"," standing"," mode"," alone",":"," attempt"," it"," normally"," and"," follow"," the"," tool","'s"," denial"," and"," escalation"," guidance",".\"\n\n","And"," the"," Approval"," policy"," is"," \"","ask","\""," -"," operations"," that"," require"," approval"," may"," ask"," through"," the"," configured"," answer","ers",".\n\n","So"," I"," can"," answer"," directly",":"," under"," the"," current"," read","-only"," policy",","," the"," write"," and"," edit"," tools"," would"," be"," denied",","," but"," I"," can"," attempt"," an"," escalation"," with"," justification","."]},{"type":"chunk","time":1788240689973,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788240689973,"index":1,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["No"," —"," under"," the"," current"," read","-only"," file"," policy",","," `","write","`"," and"," `","edit","`"," would"," be"," denied",","," though"," I"," could"," attempt"," a"," one","-shot"," escalation"," with"," justification"," and"," wait"," for"," your"," approval","."]},{"type":"chunk","time":1788240689973,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user is asking me a direct question about whether I can create or edit a normal file under the current policy. They've told me not to call a tool just to discover the policy.\n\nLet me answer based on the current runtime context provided in the system message:\n\nCurrent DSH file policy: read-only. The write and edit tools and one-shot bash commands cannot modify files in the standing mode. However, the guidance says \"do not refuse a required modification from this standing mode alone: attempt it normally and follow the tool's denial and escalation guidance.\"\n\nAnd the Approval policy is \"ask\" - operations that require approval may ask through the configured answerers.\n\nSo I can answer directly: under the current read-only policy, the write and edit tools would be denied, but I can attempt an escalation with justification."}}},{"type":"chunk","time":1788240689973,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"No — under the current read-only file policy, `write` and `edit` would be denied, though I could attempt a one-shot escalation with justification and wait for your approval."}}},{"type":"chunk","time":1788240689973,"chunk":{"type":"usage","usage":{"inputTokens":59,"outputTokens":201,"cacheReadTokens":14848,"reasoningTokens":163}}},{"type":"chunk","time":1788240689974,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Can you create or edit","messageSeqs":[12],"source":{"kind":"fallback"}}}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user is asking me a direct question about whether I can create or edit a normal file under the current policy. They've told me not to call a tool just to discover the policy.\n\nLet me answer based on the current runtime context provided in the system message:\n\nCurrent DSH file policy: read-only. The write and edit tools and one-shot bash commands cannot modify files in the standing mode. However, the guidance says \"do not refuse a required modification from this standing mode alone: attempt it normally and follow the tool's denial and escalation guidance.\"\n\nAnd the Approval policy is \"ask\" - operations that require approval may ask through the configured answerers.\n\nSo I can answer directly: under the current read-only policy, the write and edit tools would be denied, but I can attempt an escalation with justification."},{"type":"text","text":"No — under the current read-only file policy, `write` and `edit` would be denied, though I could attempt a one-shot escalation with justification and wait for your approval."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":59,"outputTokens":201,"cacheReadTokens":14848,"reasoningTokens":163},"stream":[{"type":"chunk","time":1788699482666,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699482666,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," user"," is"," asking"," me"," a"," direct"," question"," about"," whether"," I"," can"," create"," or"," edit"," a"," normal"," file"," under"," the"," current"," policy","."," They","'ve"," told"," me"," not"," to"," call"," a"," tool"," just"," to"," discover"," the"," policy",".\n\n","Let"," me"," answer"," based"," on"," the"," current"," runtime"," context"," provided"," in"," the"," system"," message",":\n\n","Current"," D","SH"," file"," policy",":"," read","-only","."," The"," write"," and"," edit"," tools"," and"," one","-shot"," bash"," commands"," cannot"," modify"," files"," in"," the"," standing"," mode","."," However",","," the"," guidance"," says"," \"","do"," not"," refuse"," a"," required"," modification"," from"," this"," standing"," mode"," alone",":"," attempt"," it"," normally"," and"," follow"," the"," tool","'s"," denial"," and"," escalation"," guidance",".\"\n\n","And"," the"," Approval"," policy"," is"," \"","ask","\""," -"," operations"," that"," require"," approval"," may"," ask"," through"," the"," configured"," answer","ers",".\n\n","So"," I"," can"," answer"," directly",":"," under"," the"," current"," read","-only"," policy",","," the"," write"," and"," edit"," tools"," would"," be"," denied",","," but"," I"," can"," attempt"," an"," escalation"," with"," justification","."]},{"type":"chunk","time":1788699482668,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699482668,"index":1,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["No"," —"," under"," the"," current"," read","-only"," file"," policy",","," `","write","`"," and"," `","edit","`"," would"," be"," denied",","," though"," I"," could"," attempt"," a"," one","-shot"," escalation"," with"," justification"," and"," wait"," for"," your"," approval","."]},{"type":"chunk","time":1788699482668,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user is asking me a direct question about whether I can create or edit a normal file under the current policy. They've told me not to call a tool just to discover the policy.\n\nLet me answer based on the current runtime context provided in the system message:\n\nCurrent DSH file policy: read-only. The write and edit tools and one-shot bash commands cannot modify files in the standing mode. However, the guidance says \"do not refuse a required modification from this standing mode alone: attempt it normally and follow the tool's denial and escalation guidance.\"\n\nAnd the Approval policy is \"ask\" - operations that require approval may ask through the configured answerers.\n\nSo I can answer directly: under the current read-only policy, the write and edit tools would be denied, but I can attempt an escalation with justification."}}},{"type":"chunk","time":1788699482668,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"No — under the current read-only file policy, `write` and `edit` would be denied, though I could attempt a one-shot escalation with justification and wait for your approval."}}},{"type":"chunk","time":1788699482668,"chunk":{"type":"usage","usage":{"inputTokens":59,"outputTokens":201,"cacheReadTokens":14848,"reasoningTokens":163}}},{"type":"chunk","time":1788699482668,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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 {"type":"turn/end","data":{"turn":1,"reason":{"kind":"completed"}}}
 {"type":"command/run","data":{"commandId":"{{command:2}}","name":"permission","args":" danger-full-access","source":{"kind":"user"}}}
@@ -33,7 +33,7 @@
 {"type":"user/message","data":{"content":[{"type":"text","text":"The approval policy changed from \"ask\" to \"never\" (changed by the user)."}],"source":{"kind":"plugin","plugin":"user-approval"},"role":"user","id":"{{message:5}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Does the DSH file sandbox currently restrict file operations? Answer directly in one sentence. Do not call tools."}],"source":{"kind":"user","rpcId":"{{rpc:2}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:6}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}]},"role":"user","id":"{{message:7}}"},"surfaceOp":"append"}
-{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user is asking about the current DSH file sandbox restrictions. According to the current runtime context snapshot, the file policy is \"danger-full-access\" which means no restrictions on file operations. Also, approval prompts are disabled, so I should not request sandbox escalation.\n\nLet me answer directly in one sentence without calling tools."},{"type":"text","text":"No, the DSH file sandbox currently grants full access — it does not restrict file operations."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:8}}"},"usage":{"inputTokens":202,"outputTokens":87,"cacheReadTokens":14848,"reasoningTokens":66},"stream":[{"type":"chunk","time":1788240690252,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788240690252,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," user"," is"," asking"," about"," the"," current"," D","SH"," file"," sand","box"," restrictions","."," According"," to"," the"," current"," runtime"," context"," snapshot",","," the"," file"," policy"," is"," \"","danger","-full","-access","\""," which"," means"," no"," restrictions"," on"," file"," operations","."," Also",","," approval"," prompts"," are"," disabled",","," so"," I"," should"," not"," request"," sand","box"," escalation",".\n\n","Let"," me"," answer"," directly"," in"," one"," sentence"," without"," calling"," tools","."]},{"type":"chunk","time":1788240690252,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788240690252,"index":1,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["No",","," the"," D","SH"," file"," sand","box"," currently"," grants"," full"," access"," —"," it"," does"," not"," restrict"," file"," operations","."]},{"type":"chunk","time":1788240690253,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user is asking about the current DSH file sandbox restrictions. According to the current runtime context snapshot, the file policy is \"danger-full-access\" which means no restrictions on file operations. Also, approval prompts are disabled, so I should not request sandbox escalation.\n\nLet me answer directly in one sentence without calling tools."}}},{"type":"chunk","time":1788240690253,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"No, the DSH file sandbox currently grants full access — it does not restrict file operations."}}},{"type":"chunk","time":1788240690253,"chunk":{"type":"usage","usage":{"inputTokens":202,"outputTokens":87,"cacheReadTokens":14848,"reasoningTokens":66}}},{"type":"chunk","time":1788240690253,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user is asking about the current DSH file sandbox restrictions. According to the current runtime context snapshot, the file policy is \"danger-full-access\" which means no restrictions on file operations. Also, approval prompts are disabled, so I should not request sandbox escalation.\n\nLet me answer directly in one sentence without calling tools."},{"type":"text","text":"No, the DSH file sandbox currently grants full access — it does not restrict file operations."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:8}}"},"usage":{"inputTokens":202,"outputTokens":87,"cacheReadTokens":14848,"reasoningTokens":66},"stream":[{"type":"chunk","time":1788699482952,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699482952,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," user"," is"," asking"," about"," the"," current"," D","SH"," file"," sand","box"," restrictions","."," According"," to"," the"," current"," runtime"," context"," snapshot",","," the"," file"," policy"," is"," \"","danger","-full","-access","\""," which"," means"," no"," restrictions"," on"," file"," operations","."," Also",","," approval"," prompts"," are"," disabled",","," so"," I"," should"," not"," request"," sand","box"," escalation",".\n\n","Let"," me"," answer"," directly"," in"," one"," sentence"," without"," calling"," tools","."]},{"type":"chunk","time":1788699482953,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699482953,"index":1,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["No",","," the"," D","SH"," file"," sand","box"," currently"," grants"," full"," access"," —"," it"," does"," not"," restrict"," file"," operations","."]},{"type":"chunk","time":1788699482953,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user is asking about the current DSH file sandbox restrictions. According to the current runtime context snapshot, the file policy is \"danger-full-access\" which means no restrictions on file operations. Also, approval prompts are disabled, so I should not request sandbox escalation.\n\nLet me answer directly in one sentence without calling tools."}}},{"type":"chunk","time":1788699482953,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"No, the DSH file sandbox currently grants full access — it does not restrict file operations."}}},{"type":"chunk","time":1788699482953,"chunk":{"type":"usage","usage":{"inputTokens":202,"outputTokens":87,"cacheReadTokens":14848,"reasoningTokens":66}}},{"type":"chunk","time":1788699482953,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":2,"step":1}}
 {"type":"turn/end","data":{"turn":2,"reason":{"kind":"completed"}}}
 {"type":"command/run","data":{"commandId":"{{command:3}}","name":"permission","args":" workspace-write","source":{"kind":"user"}}}
@@ -50,7 +50,7 @@
 {"type":"user/message","data":{"content":[{"type":"text","text":"The approval policy changed from \"never\" to \"ask\" (changed by the user)."}],"source":{"kind":"plugin","plugin":"user-approval"},"role":"user","id":"{{message:9}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Reply with exactly WORKSPACE_POLICY_SEEN. Do not call tools."}],"source":{"kind":"user","rpcId":"{{rpc:3}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:10}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"{{message:11}}"},"surfaceOp":"append"}
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+{"type":"assistant/message","data":{"turn":3,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to reply with exactly \"WORKSPACE_POLICY_SEEN\"."},{"type":"text","text":"WORKSPACE_POLICY_SEEN"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:12}}"},"usage":{"inputTokens":245,"outputTokens":27,"cacheReadTokens":14976,"reasoningTokens":18},"stream":[{"type":"chunk","time":1788699483136,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699483136,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," exactly"," \"","WORK","SP","ACE","_P","OL","ICY","_SE","EN","\"."]},{"type":"chunk","time":1788699483136,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699483136,"index":1,"dt":[0,0,1,0,0,0,0],"texts":["WORK","SP","ACE","_P","OL","ICY","_SE","EN"]},{"type":"chunk","time":1788699483137,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to reply with exactly \"WORKSPACE_POLICY_SEEN\"."}}},{"type":"chunk","time":1788699483137,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"WORKSPACE_POLICY_SEEN"}}},{"type":"chunk","time":1788699483137,"chunk":{"type":"usage","usage":{"inputTokens":245,"outputTokens":27,"cacheReadTokens":14976,"reasoningTokens":18}}},{"type":"chunk","time":1788699483137,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":3,"step":1}}
 {"type":"turn/end","data":{"turn":3,"reason":{"kind":"completed"}}}
 {"type":"command/run","data":{"commandId":"{{command:4}}","name":"permission","args":" read-only","source":{"kind":"user"}}}
@@ -63,23 +63,23 @@
 {"type":"step/start","data":{"turn":4,"step":1}}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Create the relative path policy-neutral.txt in the current workspace containing exactly POLICY_NEUTRAL_OK, verify its contents, then report completion."}],"source":{"kind":"user","rpcId":"{{rpc:4}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:13}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"{{message:14}}"},"surfaceOp":"append"}
-{"type":"assistant/message","data":{"turn":4,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The current policy is read-only, so write tools will be denied. I should attempt it normally and follow the denial/ escalation guidance. Let me try to write the file."},{"type":"tool-call","id":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","arguments":"{\"file_path\": \"policy-neutral.txt\", \"content\": \"POLICY_NEUTRAL_OK\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:15}}"},"usage":{"inputTokens":265,"outputTokens":103,"cacheReadTokens":15104,"reasoningTokens":35},"stream":[{"type":"chunk","time":1788240690726,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788240690726,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," current"," policy"," is"," read","-only",","," so"," write"," tools"," will"," be"," denied","."," I"," should"," attempt"," it"," normally"," and"," follow"," the"," denial","/"," escalation"," guidance","."," Let"," me"," try"," to"," write"," the"," file","."]},{"type":"chunk","time":1788240690726,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788240690726,"index":1,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"id":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","args":["","{","\"","file","_path","\"",": ","\"","policy","-neutral",".txt","\"",", ","\"","content","\"",": ","\"","POL","ICY","_","NE","UT","RAL","_OK","\"","}"]},{"type":"chunk","time":1788240690726,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The current policy is read-only, so write tools will be denied. I should attempt it normally and follow the denial/ escalation guidance. Let me try to write the file."}}},{"type":"chunk","time":1788240690726,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","arguments":"{\"file_path\": \"policy-neutral.txt\", \"content\": \"POLICY_NEUTRAL_OK\"}"}}},{"type":"chunk","time":1788240690726,"chunk":{"type":"usage","usage":{"inputTokens":265,"outputTokens":103,"cacheReadTokens":15104,"reasoningTokens":35}}},{"type":"chunk","time":1788240690727,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":4,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The current policy is read-only, so write tools will be denied. I should attempt it normally and follow the denial/ escalation guidance. Let me try to write the file."},{"type":"tool-call","id":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","arguments":"{\"file_path\": \"policy-neutral.txt\", \"content\": \"POLICY_NEUTRAL_OK\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:15}}"},"usage":{"inputTokens":265,"outputTokens":103,"cacheReadTokens":15104,"reasoningTokens":35},"stream":[{"type":"chunk","time":1788699483387,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699483387,"index":0,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"texts":["The"," current"," policy"," is"," read","-only",","," so"," write"," tools"," will"," be"," denied","."," I"," should"," attempt"," it"," normally"," and"," follow"," the"," denial","/"," escalation"," guidance","."," Let"," me"," try"," to"," write"," the"," file","."]},{"type":"chunk","time":1788699483387,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788699483387,"index":1,"dt":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"id":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","args":["","{","\"","file","_path","\"",": ","\"","policy","-neutral",".txt","\"",", ","\"","content","\"",": ","\"","POL","ICY","_","NE","UT","RAL","_OK","\"","}"]},{"type":"chunk","time":1788699483387,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The current policy is read-only, so write tools will be denied. I should attempt it normally and follow the denial/ escalation guidance. Let me try to write the file."}}},{"type":"chunk","time":1788699483387,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","arguments":"{\"file_path\": \"policy-neutral.txt\", \"content\": \"POLICY_NEUTRAL_OK\"}"}}},{"type":"chunk","time":1788699483387,"chunk":{"type":"usage","usage":{"inputTokens":265,"outputTokens":103,"cacheReadTokens":15104,"reasoningTokens":35}}},{"type":"chunk","time":1788699483387,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
 {"type":"tool/call","data":{"turn":4,"step":1,"callId":"call_00_1SovMaD1sZjZwhmQuUCb7415","name":"write","arguments":"{\"file_path\": \"policy-neutral.txt\", \"content\": \"POLICY_NEUTRAL_OK\"}"}}
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diff --git a/snapshots/web/plan-review/session.v3.jsonl b/snapshots/web/plan-review/session.v3.jsonl
index 14137c85ac..52e071612c 100644
--- a/snapshots/web/plan-review/session.v3.jsonl
+++ b/snapshots/web/plan-review/session.v3.jsonl
@@ -12,10 +12,10 @@
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Let me do that directly."}}},{"type":"chunk","time":0,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Since the user has explicitly asked me not to read or write any files and to go straight to planning, I'll proceed with `exit_plan_mode`."}}},{"type":"chunk","time":0,"chunk":{"type":"block-end","index":2,"block":{"type":"tool-call","id":"call_00_TPh5fH8x5kRezK115kgx8155","name":"exit_plan_mode","arguments":"{\"plan\": \"# Add `--greeting` flag to CLI\\n\\n- **Locate the CLI entry point** (e.g., `cli.py`, `main.go`, `index.js` etc.) and find the argument parser definition (argparse, click, cobra, yargs, or similar).\\n- **Register a new optional string argument** named `--greeting` with a short alias (`-g` if available) and a sensible default value (e.g., `\\\"Hello\\\"`).\\n- **Thread the parsed value** through the main handler function so it is passed where the greeting string is used (e.g., the welcome/response message).\\n- **Update the help text** so `--help` or `-h` shows the new flag with its description.\\n- **No tests or config changes** unless they already exist and directly validate the flag's presence.\"}"}}},{"type":"chunk","time":0,"chunk":{"type":"usage","usage":{"inputTokens":4529,"outputTokens":303,"cacheReadTokens":640,"reasoningTokens":52}}},{"type":"chunk","time":0,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Plan a small change: add","messageSeqs":[11],"source":{"kind":"fallback"}}}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to plan a small change to add a `--greeting` flag to a CLI. They explicitly told me not to read or write any files, and to call exit_plan_mode with a short plan. Let me do that directly."},{"type":"text","text":"Since the user has explicitly asked me not to read or write any files and to go straight to planning, I'll proceed with `exit_plan_mode`."},{"type":"tool-call","id":"call_00_TPh5fH8x5kRezK115kgx8155","name":"exit_plan_mode","arguments":"{\"plan\": \"# Add `--greeting` flag to CLI\\n\\n- **Locate the CLI entry point** (e.g., `cli.py`, `main.go`, `index.js` etc.) and find the argument parser definition (argparse, click, cobra, yargs, or similar).\\n- **Register a new optional string argument** named `--greeting` with a short alias (`-g` if available) and a sensible default value (e.g., `\\\"Hello\\\"`).\\n- **Thread the parsed value** through the main handler function so it is passed where the greeting string is used (e.g., the welcome/response message).\\n- **Update the help text** so `--help` or `-h` shows the new flag with its description.\\n- **No tests or config changes** unless they already exist and directly validate the flag's presence.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":4529,"outputTokens":303,"cacheReadTokens":640,"reasoningTokens":52},"stream":[{"type":"chunk","time":1788699501178,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699501194,"index":0,"dt":[16,16,15,17,16,16,17,16,15,17,16,16,16,16,15,16,16,16,16,16,17,16,16,17,16,15,16,15,16,16,16,16,16,16,15,17,16,15,16,16,16,16,16,16,16,16,16,16,16,16,16],"texts":["The"," user"," wants"," me"," to"," plan"," a"," small"," change"," to"," add"," a"," `","--","gre","eting","`"," flag"," to"," a"," CLI","."," They"," explicitly"," told"," me"," not"," to"," read"," or"," write"," any"," files",","," and"," to"," call"," exit","_","plan","_mode"," with"," a"," short"," plan","."," Let"," me"," do"," that"," directly","."]},{"type":"chunk","time":1788699502025,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699502041,"index":1,"dt":[15,16,16,16,16,16,16,16,15,16,16,16,15,16,16,16,16,15,16,15,16,17,16,16,15,16,16,16,16,16],"texts":["Since"," the"," user"," has"," explicitly"," asked"," me"," not"," to"," read"," or"," write"," any"," files"," and"," to"," go"," straight"," to"," planning",","," I","'ll"," proceed"," with"," `","exit","_","plan","_mode","`."]},{"type":"chunk","time":1788699502532,"chunk":{"type":"block-start","index":2,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788699502548,"index":2,"dt":[16,16,16,16,16,16,16,17,16,16,16,16,16,16,16,17,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,17,16,16,16,17,16,16,16,16,16,16,16,16,16,17,16,16,16,15,16,17,15,16,16,16,17,16,16,16,17,16,17,16,16,16,16,17,16,17,16,15,16,16,16,16,16,17,15,16,15,16,16,16,16,16,16,16,16,16,17,16,16,17,16,16,16,16,16,16,16,16,16,16,16,15,16,16,16,16,17,15,16,16,16,16,16,16,15,16,17,15,16,16,15,16,15,16,16,15,16,15,16,16,16,17,16,15,16,15,16,16,16,15,16,16,16,16,16,15,16,15,16,16,16,16,15,16,16,16,16,15,16,16,16,16,16,16,16,16,16,16,15,16,16,15,16,16,16],"id":"call_00_TPh5fH8x5kRezK115kgx8155","name":"exit_plan_mode","args":["","{","\"","plan","\"",": ","\"","#"," Add"," `","--","gre","eting","`"," flag"," to"," CLI","\\n\\n","-"," **","Loc","ate"," the"," CLI"," entry"," point","**"," (","e",".g",".,"," `","cli",".py","`,"," `","main",".go","`,"," `","index",".js","`"," etc",".)"," and"," find"," the"," argument"," parser"," definition"," (","arg","parse",","," click",","," cob","ra",","," y","args",","," or"," similar",").\\n","-"," **","Register"," a"," new"," optional"," string"," argument","**"," named"," `","--","gre","eting","`"," with"," a"," short"," alias"," (`","-","g","`"," if"," available",")"," and"," a"," sensible"," default"," value"," (","e",".g",".,"," `","\\\"","Hello","\\\"","`",").\\n","-"," **","Thread"," the"," parsed"," value","**"," through"," the"," main"," handler"," function"," so"," it"," is"," passed"," where"," the"," greeting"," string"," is"," used"," (","e",".g",".,"," the"," welcome","/","response"," message",").\\n","-"," **","Update"," the"," help"," text","**"," so"," `","--","help","`"," or"," `","-","h","`"," shows"," the"," new"," flag"," with"," its"," description",".\\n","-"," **","No"," tests"," or"," config"," changes","**"," unless"," they"," already"," exist"," and"," directly"," validate"," the"," flag","'s"," presence",".","\"","}"]},{"type":"chunk","time":1788699505519,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to plan a small change to add a `--greeting` flag to a CLI. They explicitly told me not to read or write any files, and to call exit_plan_mode with a short plan. Let me do that directly."}}},{"type":"chunk","time":1788699505535,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Since the user has explicitly asked me not to read or write any files and to go straight to planning, I'll proceed with `exit_plan_mode`."}}},{"type":"chunk","time":1788699505551,"chunk":{"type":"block-end","index":2,"block":{"type":"tool-call","id":"call_00_TPh5fH8x5kRezK115kgx8155","name":"exit_plan_mode","arguments":"{\"plan\": \"# Add `--greeting` flag to CLI\\n\\n- **Locate the CLI entry point** (e.g., `cli.py`, `main.go`, `index.js` etc.) and find the argument parser definition (argparse, click, cobra, yargs, or similar).\\n- **Register a new optional string argument** named `--greeting` with a short alias (`-g` if available) and a sensible default value (e.g., `\\\"Hello\\\"`).\\n- **Thread the parsed value** through the main handler function so it is passed where the greeting string is used (e.g., the welcome/response message).\\n- **Update the help text** so `--help` or `-h` shows the new flag with its description.\\n- **No tests or config changes** unless they already exist and directly validate the flag's presence.\"}"}}},{"type":"chunk","time":1788699505566,"chunk":{"type":"usage","usage":{"inputTokens":4529,"outputTokens":303,"cacheReadTokens":640,"reasoningTokens":52}}},{"type":"chunk","time":1788699505582,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
 {"type":"tool/call","data":{"turn":1,"step":1,"callId":"call_00_TPh5fH8x5kRezK115kgx8155","name":"exit_plan_mode","arguments":"{\"plan\": \"# Add `--greeting` flag to CLI\\n\\n- **Locate the CLI entry point** (e.g., `cli.py`, `main.go`, `index.js` etc.) and find the argument parser definition (argparse, click, cobra, yargs, or similar).\\n- **Register a new optional string argument** named `--greeting` with a short alias (`-g` if available) and a sensible default value (e.g., `\\\"Hello\\\"`).\\n- **Thread the parsed value** through the main handler function so it is passed where the greeting string is used (e.g., the welcome/response message).\\n- **Update the help text** so `--help` or `-h` shows the new flag with its description.\\n- **No tests or config changes** unless they already exist and directly validate the flag's presence.\"}"}}
 {"type":"tool/result","data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_TPh5fH8x5kRezK115kgx8155"},"content":[{"type":"tool-result","toolCallId":"call_00_TPh5fH8x5kRezK115kgx8155","content":[{"type":"text","text":"Plan approved — plan mode exited; carry out the plan starting with your next step."}],"isError":false}],"role":"user","id":"{{message:5}}"}},"sourceEventSeqs":[17],"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":1}}
@@ -23,6 +23,6 @@
 {"type":"step/start","data":{"turn":1,"step":2}}
 {"type":"system/message","data":{"turn":1,"step":2,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:6}}"}},"sourceEventSeqs":[10],"surfaceOp":{"op":"replace","start":10,"end":10}}
 {"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"tools":"{{tools}}"},"reason":"series"}}
-{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The plan was approved. The user's last instruction says: \"Once the plan is approved, reply with the single word DONE and stop.\" So I should just reply with DONE and stop."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:7}}"},"usage":{"inputTokens":441,"outputTokens":43,"cacheReadTokens":4608,"reasoningTokens":40},"stream":[{"type":"chunk","time":1788682199938,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788682199954,"index":0,"dt":[16,16,15,15,16,15,17,16,16,16,16,17,16,16,17,17,16,16,15,16,17,17,16,17,16,17,17,16,16,15,17,16,17,16,17,16,16,16,17],"texts":["The"," plan"," was"," approved","."," The"," user","'s"," last"," instruction"," says",":"," \"","Once"," the"," plan"," is"," approved",","," reply"," with"," the"," single"," word"," D","ONE"," and"," stop",".\""," So"," I"," should"," just"," reply"," with"," D","ONE"," and"," stop","."]},{"type":"chunk","time":1788682200602,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788682200617,"index":1,"dt":[16],"texts":["D","ONE"]},{"type":"chunk","time":1788682200648,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The plan was approved. The user's last instruction says: \"Once the plan is approved, reply with the single word DONE and stop.\" So I should just reply with DONE and stop."}}},{"type":"chunk","time":1788682200665,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1788682200681,"chunk":{"type":"usage","usage":{"inputTokens":441,"outputTokens":43,"cacheReadTokens":4608,"reasoningTokens":40}}},{"type":"chunk","time":1788682200698,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The plan was approved. The user's last instruction says: \"Once the plan is approved, reply with the single word DONE and stop.\" So I should just reply with DONE and stop."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:7}}"},"usage":{"inputTokens":441,"outputTokens":43,"cacheReadTokens":4608,"reasoningTokens":40},"stream":[{"type":"chunk","time":1788699506015,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699506030,"index":0,"dt":[16,16,16,17,16,17,15,15,16,16,16,16,16,15,16,16,17,15,16,16,16,16,15,16,16,16,15,16,16,16,16,17,17,17,16,16,16,16,16],"texts":["The"," plan"," was"," approved","."," The"," user","'s"," last"," instruction"," says",":"," \"","Once"," the"," plan"," is"," approved",","," reply"," with"," the"," single"," word"," D","ONE"," and"," stop",".\""," So"," I"," should"," just"," reply"," with"," D","ONE"," and"," stop","."]},{"type":"chunk","time":1788699506670,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699506686,"index":1,"dt":[17],"texts":["D","ONE"]},{"type":"chunk","time":1788699506719,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The plan was approved. The user's last instruction says: \"Once the plan is approved, reply with the single word DONE and stop.\" So I should just reply with DONE and stop."}}},{"type":"chunk","time":1788699506735,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1788699506750,"chunk":{"type":"usage","usage":{"inputTokens":441,"outputTokens":43,"cacheReadTokens":4608,"reasoningTokens":40}}},{"type":"chunk","time":1788699506765,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":2}}
 {"type":"turn/end","data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/snapshots/web/ptc-round/session.v3.jsonl b/snapshots/web/ptc-round/session.v3.jsonl
index 52bdf3d900..75ff98347c 100644
--- a/snapshots/web/ptc-round/session.v3.jsonl
+++ b/snapshots/web/ptc-round/session.v3.jsonl
@@ -9,10 +9,10 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Using ONE run_code program: run bash `echo CODE_ROUND_OK`, then read the file missing.txt catching its error in the program. Return an object with both outcomes. Then reply DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
-{"type":"session/title","data":{"title":"Using ONE run_code program: run","messageSeqs":[8],"source":{"kind":"fallback"}}}
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diff --git a/snapshots/web/question-composer/session.v3.jsonl b/snapshots/web/question-composer/session.v3.jsonl
index 532f4b1284..28b2ae29ad 100644
--- a/snapshots/web/question-composer/session.v3.jsonl
+++ b/snapshots/web/question-composer/session.v3.jsonl
@@ -9,14 +9,14 @@
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+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user answered \"Blue\". I should now reply with the single word DONE and stop."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:6}}"},"usage":{"inputTokens":284,"outputTokens":22,"cacheReadTokens":4096,"reasoningTokens":19},"stream":[{"type":"chunk","time":1788699434956,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}},{"type":"reasoning-chunks","time0":1788699434971,"index":0,"dt":[16,14,17,16,15,17,16,16,15,16,17,15,16,16,17,16,16,16],"texts":["The"," user"," answered"," \"","Blue","\"."," I"," should"," now"," reply"," with"," the"," single"," word"," D","ONE"," and"," stop","."]},{"type":"chunk","time":1788699435274,"chunk":{"type":"block-start","index":1,"blockType":"text"}},{"type":"text-chunks","time0":1788699435289,"index":1,"dt":[17],"texts":["D","ONE"]},{"type":"chunk","time":1788699435322,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user answered \"Blue\". I should now reply with the single word DONE and stop."}}},{"type":"chunk","time":1788699435338,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1788699435353,"chunk":{"type":"usage","usage":{"inputTokens":284,"outputTokens":22,"cacheReadTokens":4096,"reasoningTokens":19}}},{"type":"chunk","time":1788699435370,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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diff --git a/snapshots/web/steering/session.v3.jsonl b/snapshots/web/steering/session.v3.jsonl
index 67ea15edd1..5049ec6a6d 100644
--- a/snapshots/web/steering/session.v3.jsonl
+++ b/snapshots/web/steering/session.v3.jsonl
@@ -9,19 +9,19 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Use the ask_user_question tool to ask me exactly one question with id \"checkpoint\", question \"Ready to continue?\", header \"Checkpoint\", and options labeled \"Yes\" and \"No\". After I answer, reply with one short sentence acknowledging my answer and stop."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
-{"type":"session/title","data":{"title":"Use the ask_user_question tool to","messageSeqs":[8],"source":{"kind":"fallback"}}}
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+{"type":"session/title","data":{"title":"Use the ask_user_question tool to","messageSeqs":[8],"source":{"kind":"fallback"}}}
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-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"steering-question","name":"ask_user_question","arguments":"{\"questions\":[{\"id\":\"checkpoint\",\"question\":\"Ready to continue?\",\"header\":\"Checkpoint\",\"options\":[{\"label\":\"Yes\"},{\"label\":\"No\"}]}]}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:5}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788240429254,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"tool-call-chunks","time0":1788240429756,"index":0,"dt":[],"id":"steering-question","name":"ask_user_question","args":["{\"questions\":[{\"id\":\"checkpoint\",\"question\":\"Ready to continue?\",\"header\":\"Checkpoint\",\"options\":[{\"label\":\"Yes\"},{\"label\":\"No\"}]}]}"]},{"type":"chunk","time":1788240430258,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"steering-question","name":"ask_user_question","arguments":"{\"questions\":[{\"id\":\"checkpoint\",\"question\":\"Ready to continue?\",\"header\":\"Checkpoint\",\"options\":[{\"label\":\"Yes\"},{\"label\":\"No\"}]}]}"}}},{"type":"chunk","time":1788240430759,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788240431261,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
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-{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"Great, let's move forward. BANANA!"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:7}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788240432201,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"text-chunks","time0":1788240432703,"index":0,"dt":[],"texts":["Great, let's move forward. BANANA!"]},{"type":"chunk","time":1788240433206,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Great, let's move forward. BANANA!"}}},{"type":"chunk","time":1788240433708,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788240434210,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"Great, let's move forward. BANANA!"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:7}}"},"usage":{"inputTokens":10,"outputTokens":5},"stream":[{"type":"chunk","time":1788699402139,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"text-chunks","time0":1788699402640,"index":0,"dt":[],"texts":["Great, let's move forward. BANANA!"]},{"type":"chunk","time":1788699403142,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Great, let's move forward. BANANA!"}}},{"type":"chunk","time":1788699403642,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},{"type":"chunk","time":1788699404143,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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diff --git a/snapshots/web/turn-tail-actions/session.v3.jsonl b/snapshots/web/turn-tail-actions/session.v3.jsonl
index ca56b2b092..4f4aaeb433 100644
--- a/snapshots/web/turn-tail-actions/session.v3.jsonl
+++ b/snapshots/web/turn-tail-actions/session.v3.jsonl
@@ -9,14 +9,14 @@
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Begin your reply with the plain sentence \"Reading the workspace now.\" as text, and in that same message call the bash tool with the command \"echo alpha\". After the tool result, reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpc:1}}","clientTimeZone":"Asia/Shanghai"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
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-{"type":"session/title","data":{"title":"Begin your reply with the","messageSeqs":[8],"source":{"kind":"fallback"}}}
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diff --git a/snapshots/web/web-search-round/session.v3.jsonl b/snapshots/web/web-search-round/session.v3.jsonl
index 97ea5bee65..e2000d1e21 100644
--- a/snapshots/web/web-search-round/session.v3.jsonl
+++ b/snapshots/web/web-search-round/session.v3.jsonl
@@ -9,16 +9,16 @@
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