fix(gateway): preserve compressed session in queued follow-ups

[richkapp]

What changed

Queued follow-up turns now continue on the live session returned by the immediately preceding turn. Previously, when that turn compressed its transcript, the recursive follow-up reused the closed parent session and failed with CompressionSessionClosedError.

The effective session now drives:

• queued follow-up agent construction
• history/cache refresh after the completed turn
• recursive follow-up execution
• queued /goal activity checks

When an active goal must move from the compressed parent to its continuation, the state transfer is now one BEGIN IMMEDIATE transaction with source-value CAS and a destination-absent guard. A partial write rolls back, and a child pause/clear cannot be overwritten. If goal state is temporarily unreadable, the synthetic continuation is retried once and then parked in FIFO rather than silently discarded or hot-looped.

The cached-agent snapshot advances parent→child only when that same cached agent reports the returned child session, preserving warm-prefix reuse without weakening stale/dead-session eviction.

If a result omits session_id, behavior still falls back to the original session.

Why

Compression closes the parent session and publishes a live continuation. Reusing the parent for a queued message risks a persistence failure even though storage, permissions, and the database are healthy. Goal migration also has to preserve user control and survive partial writes; otherwise a queued synthetic continuation can vanish during the same rotation boundary.

Tests

• HERMES_TEST_FILE_RETRIES=0 scripts/run_tests.sh tests/gateway/test_agent_cache.py tests/gateway/test_queued_native_image_session_key.py tests/gateway/test_session_id_cache_coherence.py tests/gateway/test_first_turn_session_meta_rebaseline.py tests/gateway/test_goal_continuation_drain.py tests/hermes_cli/test_goals.py tests/gateway/test_compression_session_id_persistence.py tests/agent/test_compression_rotation_state.py tests/state/test_compression_lineage_guard.py tests/gateway/test_transcript_offset.py tests/gateway/test_queue_consumption.py -q — 122 passed
• ruff check gateway/run.py hermes_cli/goals.py hermes_state.py tests/gateway/test_queued_native_image_session_key.py tests/hermes_cli/test_goals.py
• git diff --check

Regression coverage includes the rotated-session route, non-null-parent missing-result fallback, cache re-baselining, queued-goal call-site ID forwarding, real-DB migration, rollback after an injected archive failure, paused/cleared child preservation, strict read-error handling, and bounded retry/FIFO parking.

[alt-glitch]

This was generated by AI during triage.

Duplicate of #57895. Both PRs make queued follow-ups use the compression-rotated session ID returned by the previous turn for the recursive run, goal check, and cache refresh. #57895 is the earlier open implementation.