Strip narrative comments and module/helper docstrings

Five rounds of sweep across the tree. Net ~544 lines removed.

Removed:
- Section-divider banners and one-line section labels (# Display
  utilities, # ----- list_requests -----, # CVSS breakdown, etc.).
- Module-level prose docstrings on internal modules. Kept one-line
  summaries; trimmed multi-paragraph narration about SDK/Strix
  responsibility splits, cache strategies, three-source precedence.
- Internal-helper docstrings that just restate the function name —
  caido_api helpers (caido_url, get_client, view_request, etc.),
  settings-class one-liners (LLMSettings, RuntimeSettings, ...),
  UI helper docstrings.
- Args/Returns blocks on non-LLM-facing internal helpers
  (build_strix_agent, render_system_prompt, create_or_reuse,
  bootstrap_caido) — kept only the genuinely non-obvious params.
- Internal-history phrasing — "Mirrors main-branch shape",
  "pre-SDK harness", "previous lookup matched no attribute".
- Narrative comments inside function bodies that explained what the
  next line does, design rationale obvious from the surrounding code,
  or "we used to..." asides.
- Trailing periods on every error-string literal across the tool tree.
- Duplicated roundtripTime quirk comment (kept the LLM-facing copy in
  tools/proxy/tools.py).

Kept (every one names an upstream bug, vendored-code provenance, or
non-obvious data quirk):
- core/runner.py: SDK replay-with-empty-initial-input + on_agent_end
  lifecycle gap.
- runtime/docker_client.py: VERBATIM COPY block of the upstream
  _create_container body, pinned to SDK v0.14.6.
- runtime/session_manager.py: NO_PROXY for agent-browser CDP loopback.
- tools/proxy/caido_api.py: generated-pydantic Request.raw quirk,
  replay double-history pitfall.
- tools/proxy/tools.py: Caido roundtripTime=0 quirk for proxy
  captures.

strix/interface/cli.py

@@ -93,9 +93,6 @@ async def run_cli(args: Any) -> None:  # noqa: PLR0915
         "local_sources": getattr(args, "local_sources", None) or [],
         "scope_mode": getattr(args, "scope_mode", "auto"),
         "diff_base": getattr(args, "diff_base", None),
-        # Forward the new --instruction (if any) to the resume path so it
-        # can deliver it as a fresh user message after SDK session replay.
-        # Empty string when the user didn't pass one on resume — no-op.
         "resume_instruction": getattr(args, "user_explicit_instruction", None) or "",
     }
 
@@ -190,10 +187,6 @@ async def run_cli(args: Any) -> None:  # noqa: PLR0915
             finally:
                 stop_updates.set()
                 update_thread.join(timeout=1)
-                # Best-effort: tear down the sandbox session even if the
-                # run raised. ``run_strix_scan`` already does this in its
-                # own ``finally``, but call here too in case the failure
-                # was during early setup.
                 with contextlib.suppress(Exception):
                     await session_manager.cleanup(args.run_name)