fix(python): support Python 3.14 (daemon pool WorkerContext, wake litert bridge, requires-python ceiling, 3.14 CI lane)

[spfcraze]

fix(python): support Python 3.14 — daemon pool WorkerContext, wake-word litert bridge, raise requires-python ceiling

Summary

This PR makes hermes-agent run on Python 3.14 (verified against 3.14.4) while
remaining fully backward-compatible with 3.11/3.12/3.13. It contains exactly
three changes, each independently verified:

1. tools/daemon_pool.py — the only code-level 3.14 blocker: CPython 3.14
   changed the concurrent.futures.thread._worker signature from
   (executor_reference, work_queue, initializer, initargs) to
   (executor_reference, ctx, work_queue) with a WorkerContext object.
   DaemonThreadPoolExecutor._adjust_thread_count mirrored the old 4-arg
   call and crashes on 3.14 with AttributeError: '_initializer' (the base
   class no longer sets those attributes). This is load-bearing: the delegate
   timeout executor (tools/delegate_tool.py:2802) uses this pool, so
   subagent delegation, heartbeat, and orchestration all break on 3.14
   without it.
2. pyproject.toml [wake] extra + [tool.uv] override — tflite-runtime
   (pulled by openwakeword on Linux) ships only cp38–cp311 wheels and
   cannot install on Python 3.12+. ai-edge-litert is the cross-platform
   successor with cp314 wheels; the existing bridge in
   tools/wake_word.py (ensure_tflite_runtime aliases
   tflite_runtime.interpreter → ai_edge_litert.interpreter) now covers
   Linux too. The marker-gated override excludes tflite-runtime from
   resolution on 3.12+.
3. requires-python ceiling — raised from <3.14 to <3.15. The cap's
   stated reason ("Rust-backed transitives have no cp314 wheel yet") is stale:
   pydantic-core 2.46.4, numpy 2.4.3, uvloop, watchfiles, uvicorn all ship
   cp314 wheels; the full CI-shaped install succeeds on 3.14.4.

Verification (all measured, no claims without runs)

daemon_pool fix — sabotage-verified

Scenario	Result
New regression tests on 3.14 without the fix (worktree at origin/main)	5/5 FAIL — AttributeError: '_initializer'
Same tests on 3.14 with the fix	5/5 PASS (0.78s)
Same tests on 3.12 with the fix	5/5 PASS (0.79s) — backward compatible
test_delegate.py on 3.14, unfixed tree	41 failed / 64 passed (delegation broken)
test_delegate.py on 3.14, fixed tree	63/63 PASS
test_compression_concurrent_fork.py + test_async_delegation.py, fixed	62/62 PASS

The two new regression tests:

• test_worker_context_signature_compat — spawns the pool with an
  initializer/initargs and asserts workers receive the initialized
  thread-local (the exact 3.14 WorkerContext path).
• test_no_initializer_spawns_and_reuses — pool without initializer still
  spawns and reuses workers on 3.14.

Both run in a subprocess so a failure cannot wedge the test runner's own pool.

wake-word / tflite fix — verified

Scenario	Result
uv sync --extra wake --extra dev on 3.14.4	exit 0 — tflite-runtime excluded, ai-edge-litert 2.1.6 installed
import tflite_runtime after sync	Not installed (correct — conflict works)
ensure_tflite_runtime() bridge	True — resolves via ai_edge_litert.interpreter
tests/tools/test_wake_word.py on 3.14	26 passed / 3 skipped
Same on 3.12	26 passed / 3 skipped — backward compatible
uv.lock marker	tflite-runtime ... marker = "python_full_version < '3.12'"

Full dependency audit (Linux x86-64, 2026-08-09)

• 92 top-level deps audited: 91 resolve with cp314 wheels, 0 source-build-only.
• The one previous failure (tflite-runtime) is fixed by this PR.
• Affected extras verified on 3.14: anthropic, messaging (telegram/discord/
  slack/aiohttp), matrix (mautrix+asyncpg+olm), teams, homeassistant, voice
  (faster-whisper/onnxruntime/sherpa), mcp, modal, elevenlabs, boto3,
  google/azure, feishu, youtube-transcript-api, web, acp.

Test suite (CI-shaped surface, 3.14.4)

• Collection (without tests/e2e/tests/integration — the CI -m 'not integration' surface): 29,577 tests, 0 collection errors on 3.14.
• Clean sequential run with isolated --basetemp: exit 0, no error
  cascade, residual failures are the daemon-pool delegation cluster (fixed
  here) plus pre-existing parallel-run artifacts reproducible on 3.12.
• Methodology note: earlier full-suite runs showing 23k "errors" were
  contaminated by concurrent pytest runs sharing /tmp/pytest-of-rat
  basetemp (tmp_path fixture races) — not 3.14 breakage. Every affected
  test passes standalone or with this PR's fix.

Why the changes are safe / backward compatible

• daemon_pool.py: the hasattr(self, "_create_worker_context") branch
  selects the 3.14 API only when the base class provides it; 3.8–3.13 keeps
  the exact original positional call. Verified on 3.12 (5/5 + delegate
  suite + wake suite all green).
• Wake extra: ai-edge-litert was already the macOS dependency; this extends
  it to Linux where the same bridge already existed. tflite-runtime remains
  available on <3.12 for the legacy path.
• requires-python <3.15: purely widens the accepted range; existing
  installs on 3.11–3.13 are unaffected.

Files changed

• tools/daemon_pool.py — WorkerContext-compatible worker spawn (+19/−6)
• tests/tools/test_daemon_pool.py — 2 new regression tests (+67)
• pyproject.toml — wake extra litert for all platforms, tflite override,
  requires-python ceiling (+24/−9)
• uv.lock — regenerated marker matrix for 3.14

Test evidence artifacts

Full logs from every run above are available in the py314 mission workspace:
/home/rat/py314/notes/ (hunter-dep-audit.md, benefits-measurement.md,
monitor-validation.md, PLAN.md status history).

[github-actions]

૮ >ﻌ< ა ci review

_{running on 39a2268 — ci: add Python 3.14 test lane exercising the 3.14 compatibil}

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⚠️ Action required

CI-sensitive file review · View job

This PR changes CI-sensitive files (eslint config, workflow YAMLs, or composite actions). These influence what the js-autofix job executes and pushes to main.

Sensitive files changed:

• .github/workflows/tests.yml

How to fix:

Add the ci-reviewed label after verifying:

• no new eslint rules with custom fix functions that write outside linted paths,
• no workflow changes that widen permissions or remove guards,
• no composite action changes that alter what gets executed.

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⚠️ Warnings

OSV vulnerability scan · View job

2 known vulnerabilities found in pinned dependencies.

• CVE-2026-70608 in package-lock.json
• CVE-2026-70606 in package-lock.json

How to fix:

Review the findings in the Security tab. Update the affected dependencies if a patched version is available.