docs(python): make the dsh profile runtime current

Document dsh as the only application launcher across architecture, CLI, SDK, app-boot, Python package, contributor, tutorial, and example references. Explain explicit home selection, profile and patch precedence, persistent external plugin installation, the Node-free runtime path, and the absence of complete-config or ~/.dsh fallbacks.

Record the Python profile-runtime decision and update the active naming, installed-wheel, and SEA packaging notes with precise supersession. Regenerate the configuration catalog and module graph after deleting the carrier, update both reviewed languages and pairing records, and classify the retained standalone Cordis files as lower-level test fixtures rather than launch interfaces.

python/development.md

@@ -31,7 +31,7 @@ That suite drives fake runtime peers. `scripts/smoke-python-runtime.py` drives t
 
 ```sh
 uv run --project python/sdk python scripts/smoke-python-runtime.py \
-  --scenario sdk-minimal --exe dist-exe/dsh-jsonrpc-agent-pkg-macos-arm64
+  --scenario sdk-minimal --exe dist-exe/deepseek-harness-sdk-runtime-macos-arm64
 ```
 
 Three scenarios compare committed expected output under `scripts/snapshots/python-sdk-single-exe/`. `minimal/model-visible.json` pins the checked-in minimal composition's assembled system prompts, advertised tool schemas, and model-visible messages, so a plugin that contributes an unintended system section or user message fails the job; it drops the dynamic runtime-context snapshot, which the same composition emits on macOS and not on Linux ([#2488](https://github.com/deepseek-harness/deepseek-harness/issues/2488)). `advanced/` pins one complex process's SDK result and parent/child session logs. `restart/` launches two complete SDK runtime processes against one persistence root and snapshots their isolated model histories, high-level results, and separate durable logs. Rerun the owning scenario with `--update-snapshots` and review that diff before committing it.
@@ -43,18 +43,20 @@ An interactive smoke test needs `DEEPSEEK_API_KEY` in the environment or reposit
 ```python
 from deepseek_harness import DeepSeekHarness
 
-with DeepSeekHarness() as harness:
+with DeepSeekHarness(dsh_home="/absolute/path/to/test-dsh-home") as harness:
     print(harness.run("say hi").final_response)
 ```
 
+Alternatively export a non-empty `DSH_HOME`. The SDK rejects a launch that would silently use `~/.dsh`.
+
 ## Run against Node source
 
-Repository contributors can select either development carrier:
+Repository contributors can select either development route; both execute the normal `dsh --profile sdk` launcher:
 
 - Set `DSH_RUNTIME_MODE=node` to use the built Node carrier on system Node `>=22.19`. The build script refreshes this carrier, but distributions never include or auto-select it.
-- Set `launch_args_override=("./node_modules/.bin/tsx", "packages/sdk/python-runtime/src/packaged-bin.ts")` with the repository root as `cwd` to run the private carrier's unbuilt TypeScript source. Supply `cordis=...` when the default configuration is not suitable.
+- Set `dsh_bin` to the absolute built `apps/cli/lib/bin.js` path to exercise the checkout's CLI directly. Supply an explicit `dsh_home`, plus `profile` and ordered `patches` as needed.
 
-See `python/sdk/tests/manual_sdk_agent_smoke.py` for a complete source-mode invocation.
+`python/sdk/tests/manual_sdk_agent_smoke.py` uses the internal `_launch_args` test adapter to exercise the unbuilt TypeScript CLI under tsx. Arbitrary argv replacement is intentionally absent from the public SDK.
 
 ## Build distributions
 
@@ -71,7 +73,7 @@ print(release["pep440_version"](release["repository_version"]()))
 PY
 )"
 python scripts/build-python-release.py --package sdk --output-dir dist-python
-python scripts/build-python-release.py --package runtime --platform macos-arm64 --runtime-exe dist-exe/dsh-jsonrpc-agent-pkg-macos-arm64 --output-dir dist-python
+python scripts/build-python-release.py --package runtime --platform macos-arm64 --runtime-exe dist-exe/deepseek-harness-sdk-runtime-macos-arm64 --output-dir dist-python
 pip install \
   "dist-python/deepseek_harness_sdk-$version-py3-none-any.whl" \
   "dist-python/deepseek_harness_runtime_bin-$version-py3-none-macosx_14_0_arm64.whl"