test(ci): close three master-tip readiness races

[ScriptedAlchemy]

Summary

Rebased onto green master tip 9520d75f3612016653d90f667c57bd5a7514e454 (42 commits). Head is 30dbebab5e9f8c6600a0e2afdb48b71b2fe81556. .github/workflows/ci.yml is untouched: no pull_request trigger, hotpath stays crates.io.

• HTTP, MCP, and SDK reset-required checks ride out a still-warming project open (unavailable / after_delay / pre_admission) for the same 15s grace the CLI already uses, then assert reset_required.
• Test daemon shutdown signals the child's process group so helper processes cannot keep the listen socket alive after the leader is reaped. Master already waits up to 10s for that socket to stop accepting.
• Packaged-host advisory ingest keeps polling through accepted_for_replay; only committed or exact_duplicate proves the transcript.
• Master's generation-store lock already closes the ignored-dependency coalesced-publication race. The extra background-admission hold this branch used to layer on top is gone, so flight_tests.rs matches master.

Test plan

• cargo clippy -p tracedecay-cli --tests --locked -- -D warnings
• cargo clippy -p tracedecay --features test-helpers --test runtime_acceptance_suite --test daemon_suite --locked -- -D warnings
• cargo clippy -p tracedecay --features test-transport --test transport_acceptance_suite --locked -- -D warnings
• cli_non_interactive_test::branch_search_serves_a_committed_generation_behind_dirty_worktree_state — 1 passed
• advisory_runtime_acceptance::packaged_host_ingest_delivers_a_registered_advisory_cycle — 1 passed
• code_index_ignored_dependencies_test::flight_tests::coalesced_publication_failure_preserves_the_scheduler_error_family — 1 passed
• typed_terminal_restart_acceptance::transport_boundaries::reset_required_survives_http_mcp_and_rust_sdk_across_restart — 1 passed
• Push CI does not run on this branch. Dispatch CI (workflow_dispatch) on 30dbebab5e9f8c6600a0e2afdb48b71b2fe81556.

Checklist

• No secrets, credentials, or .env files included
• CHANGELOG.md updated (test harness only; no user-facing change)
• Breaking changes documented (none)

  

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[chatgpt-codex-connector]

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-19T03:51:54.371935Z	eaff2e6	PR opened

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[ScriptedAlchemy]

Heads-up from the master-repair sweep: the three races this PR closes landed on master today via #1792, so this branch now conflicts with master on all three files and its CI run 35421292205 is red on the old base:

• daemon teardown / next spawn racing a still-open socket → d2b57e4ad7 (bounded wait in spawn_tracedecay_daemon_process, same refusal message);
• coalesced_publication_failure_preserves_the_scheduler_error_family pointer corruption racing the text-artifact attach's rename → 0d328fa0a9 (corruption now takes the generation-store lock, so no writer can be mid read-modify-write);
• HTTP reset/partial-effect first observation after restart answered with a retryable pre-admission unavailable → 63f23d163d and e2c8b592cd (honour the typed retry: after_delay directive).

One idea here is worth keeping: killing the daemon's process group so helper children cannot hold the listener fd. If you want it, it composes with the bounded wait; happy to fold it into the next fix PR (#1797) rather than rebase this one.