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feat: add safe compose session lifecycle - #350

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salmonumbrella wants to merge 12 commits into
maathimself:mainfrom
salmonumbrella:feat/compose-session-lifecycle
Open

feat: add safe compose session lifecycle#350
salmonumbrella wants to merge 12 commits into
maathimself:mainfrom
salmonumbrella:feat/compose-session-lifecycle

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Summary

Adds the safe compose lifecycle on top of #349: source-draft claiming, atomic
close-to-Drafts, explicit discard, queued send/undo, and durable restore
capsules.

Review the last commit only: 679de27 (feat: add safe compose session lifecycle).

Changes

  • Claim source drafts transactionally and filter claimed drafts from normal
    mailbox results.
  • Close meaningful sessions to Drafts atomically; remove empty sessions.
  • Route discard and send through the shared revisioned lifecycle.
  • Preserve attachment bytes and reply-all metadata across queued-send undo.
  • Authenticate restore capsules with canonical metadata, exact byte counts,
    and SHA-256 checks before mutation.

Testing

  • Backend: 2,463 passed; 52 environment-dependent tests skipped.
  • Backend lint: clean with zero warnings.
  • Focused lifecycle, draft, outbox, attachment, and REST suites: green.
  • Rollback, idempotency, stale revision, and tampered restore-capsule cases:
    green.
  • Diff and privacy scans: clean; synthetic example.com fixtures only.

Contributor License Agreement

By submitting this pull request I confirm that:

  • I have read and agree to the Contributor License Agreement.
  • My contribution is my own original work (or I have identified any
    third-party material and confirmed it is compatible with the CLA).
  • I have the right to submit this contribution under the terms of the CLA.

salmonumbrella and others added 12 commits July 31, 2026 16:21
Results ranked by relevance instead of date-only: subject > sender > body
(setweight A-D + ts_rank_cd), prefix matching as you type, quoted phrases,
served by a GIN index over a trigger-maintained search_fts column. Backfill
runs as a resumable background drainer (fast-DDL migrations 0035-0037, no
boot-blocking rewrite); not-yet-backfilled rows fall back to the previous
query path. Body text is materialized by a provider-gated background IMAP
drainer with circuit breakers, poison-message forward progress, and
progress reporting. Filter-only queries stay date-ordered.

No infrastructure changes - runs on stock postgres:16-alpine.

Split 1/3 of maathimself#283.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
…tor)

Explicit opt-in embeddings pipeline against any OpenAI-compatible
/v1/embeddings endpoint (key encrypted at rest, host-validated, masked on
read). Fingerprinted generations (config change => clean rebuild), a
crash-safe fill worker, per-dimension HNSW partial indexes, re-embedding of
late-arriving bodies. Query side adds hybrid BM25+ANN reciprocal-rank
fusion behind an in-input Semantic toggle; lexical stays the default, with
silent fallback while the index builds. Settings UI with explicit privacy
copy and live Test/Build progress, in all 7 locales. Migrations 0038-0039.
Includes the search-eval harness that produced the published quality
numbers, and its explain/total diagnostics seams.

Infra: compose moves postgres:16-alpine -> pgvector/pgvector:pg16 (same
PG16 major). Run REINDEX DATABASE once after the first boot: the
musl -> glibc collation change can misorder existing text btree indexes;
the app logs a loud warning when it detects this.

Split 2/3 of maathimself#283, stacked on the weighted-FTS PR.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Streamable-HTTP /mcp endpoint (SHA-256-hashed tokens minted in Profile,
Origin-validated, rate-limited) exposing 12 tools including
semantic_search_messages and search_in_message. Every call is scoped to
the token owner's accounts; deletion is staged-only. Adds the MCP-only
search seams (trusted account scoping, body-scope FTS leg, strictVector,
loadVector), the chunk-excerpt read path, migrations 0040-0041, and one
new backend dependency: @modelcontextprotocol/sdk.

Split 3/3 of maathimself#283, stacked on the semantic-embeddings PR. The stacked
tree is byte-identical to the reviewed maathimself#283 head (3773150).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
…tings

Extends the read-only MCP server (maathimself#296) to the full mail client:

- Token scopes (read/write/send/settings) enforced fail-closed at one dispatch
  choke point; tools/list filtered per token; existing tokens stay read-only.
  Per-class rate limits plus a daily send cap.
- 33 new tools (58 total): drafts, send/reply/reply-all/forward with hard
  alias validation and receipts, unsend via a real outbox (0-120s window,
  SKIP LOCKED worker, race-safe cancel), honest best-effort recall, folders/
  move/archive/trash/flags/spam/snooze/category/GTD with refuse-unbounded
  guards, an inbox-triage loop (triage_inbox / get_triage_context /
  mark_triaged) with embedding-derived signals, and settings tools including
  a staged add_account that never accepts secrets over MCP.
- Undo-send frontend: countdown toast with Undo, user preference (0-120s,
  default off so upgrades never change send behavior).
- Service extractions shared by REST and MCP (send/draft/reply/mailbox),
  fixing real bugs en route: alias silent-fallback, the References chain
  (thread_references was never used by compose), drafts dropping threading
  headers, and a new synchronous account test-connection endpoint.
- Migrations 0042-0046. Every tool def carries MCP annotations.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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