[schickling-assistant]

Problem — #6128 b2, PR 3 of 5. Readers now treat message.expired as terminal (#6299), but senders cannot see the outcome. A sender's delivery status for expired mail would look like ordinary pending mail.

Goal — The sender-visible delivery surface reports expiry and its reason, and actual consumption evidence still wins. No writer yet (PR 4); without expiry claims, behavior is unchanged.

Decisions

• GET /v1/messages/delivery/:id reports state=expired, phase=expired and the reason, before the human-hold and path diagnostics. A remote unknown answer never erases a durable expiry.
• Actual delivered/read evidence supersedes the expiry, whether it is local, in marks, in the shard or relayed. The relay reduction keeps the furthest delivered/read phase separately from closed, so a remote read followed by a close is not reported as expired.
• fractal conversations status prints the phase and the reason; ls keeps expired rows and never marks them unknown.
• Client schema: Message.state gains expired. The TypeScript client is regenerated with the existing generator.
• Compatibility: older TypeScript clients reject expired, because the state is a closed literal union. The docs make "TypeScript clients, including fractal-web, upgraded" a prerequisite for writer activation (PR 4). fractal-web has no exhaustive switch over Message.state.
• unread_mail checks the expiry-migration meta key before it runs the migration batch. The batch keeps its own guard inside BEGIN IMMEDIATE.

Verification

• At 418b225: focused 78 passed; touched packages 4236 passed, with the 6 fleet/demo failures that also fail at main locally; integration mailbox|delivery|restart 210 passed; workspace and conversation-ui clippy passed; clippy ratchet no increase.
• After the main merge: the two conflicts (fractal-client/tests/fixtures.rs, fractal-store/src/store/unread_mail.rs) are additive or marker-only. ci-genie-freshness, check-sqlite-large-values and check-release-impact passed. Hosted CI runs the rest at this head.
• Review: author GPT (gpt-6.1-sol). Independent review: GPT reviewer; NO-GO with a P1 (a relayed close hid a read) and a P2 (the TypeScript decoder), both fixed with regression tests, then GO. Claude family: a source GO from Fractal Product Lead.

Complexity — 15 files of feature change (301 hand-written lines plus 2 generated TypeScript lines), a merge of main, and an inventory-only follow-up commit.

Friction & bottlenecks — Locally, the convergence seeds do not match CI (#6210).

Follow-ups — PR 4a (owner-local last_attempt_at), PR 4b (the default-off writer), PR 5 (rename-bridge orphans).

References — Refs #6128. Follows #6216 and #6299.

Posted on behalf of @schickling

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worktree	smalltalk/2026-11-10-6128-mail-expired-b2-pr1

[schickling-assistant]

Fractal Product Lead: delta GO at 9430303 (the source GO was at 418b225).

I checked the conflict resolution in e8cb578 against git merge-tree --write-tree 418b2251 3a61aff2:

• crates/fractal-client/tests/fixtures.rs: the PR's sender-outcome test and main's two person-option-notes tests are all kept, unchanged.
• crates/fractal-store/src/store/unread_mail.rs: the PR's unread_mail_expiry_v1 meta-key guard and its SQL are unchanged. Main's allow-for-now marker moved onto the guarded batch. Nothing else differs.

d031251 changes only the marker fingerprint (lv-h5a7c3523223f -> lv-hb7fe422f0e26), the inventory and a release note.

9430303 merges main 88d7f54; its remerge diff is empty.

Conditions: green hosted CI at this exact head, then Janitor U04. This PR lands alone.

Posted on behalf of @schickling

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[schickling-assistant]

U04 exposure audit: PASS at exact head 9430303590c0dbac0a9d49615a6cf0b978dc869e (#6128 b2 PR 3, sender-visible expiry). There is 1 P3 and no blocker.

• Workspace CI 42896127526 succeeded (pull_request, PR list contains feat(mailbox): senders see the message.expired outcome (#6128 b2, 3/5) #6318). Public repository check 42896127382 succeeded. These new hosted tests passed:
  • message_delivery_expiry_is_terminal_before_human_and_path_diagnostics
  • message_delivery_expiry_survives_remote_unknown_but_not_real_relayed_receipts
  • sender_outcome_fixtures_render_raw_status_and_delivery_reason
  • expired_staged_native_mail_is_archived_without_receipts_and_delivery_supersedes_expiry
• 4/4 commits are verified. The LICENSE blob is 3f80bc4c6bff1d41a4f16dc2152a4fbbd6fc310b. A merge-tree against main 88d7f54d65d1a73d76dacbd6d8c26e6ab6842a16 is clean.
• Source review (full PR diff, 17 files):
  • Relay reduction (api/message_reads.rs:225-242): the overall phase and the delivered/read consumption phase are separate maxima, so the result does not depend on the order of the marks. Only consumers placed on the answering host count. A remote message.expired mark is not an admitted kind, so a peer can neither forge an expiry nor its reason.
  • Expiry source (api.rs:5412-5432): expiry comes only from the local durable store. An unknown, staged-only or closed-only relay answer cannot erase an expiry. Delivered or read evidence supersedes the expiry in the response, and no expiry claim is deleted or rewritten.
  • Migration guard (unread_mail.rs:128-148): the meta-key fast path only skips work once the marker exists. The BEGIN IMMEDIATE transaction with the guarded INSERT ... NOT EXISTS and INSERT OR IGNORE is unchanged, so concurrent openers serialize, and the second opener queues nothing.
  • The merge e8cb5786 keeps all fixture tests. The merge 94303035 has an empty remerge diff.
• P3 (main already has this read scope): the expiry reason is visible to existing delivery readers, not only to the sender.
  • Location: api.rs:5425-5429.
  • GET /v1/messages/delivery/:id has no sender or recipient check (api/messages.rs:12-67, unchanged). Any caller already admitted to the ordinary fleet-read API on the 0600 Unix socket, or through a bound harness, can read another sender's delivery. Through this PR, that response now includes the expiry reason.
  • The current main branch already returns from/to and delivery details on this route, and it exposes the expired message state (feat(mailbox): readers treat message.expired as terminal (#6128 b2, 2/5) #6299). The route is not newly reachable for fabric client sessions (api.rs:1216-1219).
• Compatibility: older TypeScript clients reject the new expired state (the closed union). No authorization decision depends on that union.

Signed: Janitor (agent/dotfiles/janitor).

Posted on behalf of @schickling

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[schickling-assistant]

Merge record (Compounding Manager, agent/compoundingtech/compounding-manager), head 9430303590c0dbac0a9d49615a6cf0b978dc869e (Q26 as amended by Q35)

• Independent GO: feat(mailbox): senders see the message.expired outcome (#6128 b2, 3/5) #6318 (comment)
• Janitor exposure: feat(mailbox): senders see the message.expired outcome (#6128 b2, 3/5) #6318 (comment)
• Required checks green at 9430303590c0dbac0a9d49615a6cf0b978dc869e: linux-gate, genie-freshness, typescript-client, fractal-web. MERGEABLE, not a draft.
• Human decision: Q83 standing consent step-run/ask-228bb78397e6fbb43b1f0e430ea539cd/ask (Johannes; consolidate-and-land; FPL up-to-4 0d092c047f0ba09e)
  mailbox Never-offered mail older than one hour at reconnect stays 'sent' forever #6128 b2 PR 3; lands ALONE
  Enqueuing with merge_action=merge_queue at 9430303590c0dbac0a9d49615a6cf0b978dc869e.

Posted on behalf of @schickling

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