docs(email): record export lifecycle evidence

docs/work-programmes/session-handoff.md

@@ -2,17 +2,17 @@
 
 Updated: 2026-08-10
 
-- **Exact current task:** MAIL-001 — inventory and add non-sensitive `EmailSendAttempt` coverage to readable account export and complete deletion verification.
-- **Last completed step:** legacy follow-up SMTP retirement was committed/pushed as `8fe3903`; follow-up drafts route to canonical Job email and the old direct-delivery API returns 410 without an SMTP dependency.
-- **Files currently modified:** MAIL-001/DEP-001 verification and tracking documents only; application/dependency changes are committed.
-- **Commands already run:** dependency tree/advisory review; `npm audit`; six focused router suites; full frontend; two production builds; legacy follow-up/backend worker focused tests; full backend; focused legacy UI. See V-126–V-137; legacy evidence is pending V-138.
-- **Test results:** npm audit 0 vulnerabilities; router focused 24/24; frontend 49/49 suites and 190/190 tests; production build passes. MAIL-001 legacy follow-up/backend worker 10/10, focused UI 2/2 and backend 621/621 passed before the dependency upgrade; full frontend/build also pass with both working-tree changes present.
+- **Exact current task:** MAIL-001 — trace shared provider-neutral thread/application actions and implement only capabilities the existing providers can safely support.
+- **Last completed step:** content-free send-attempt export and hard-job-delete cascade coverage was committed/pushed as `aff34cc`; encrypted/daily exports exclude the internal payload hash and two-owner tests pass.
+- **Files currently modified:** MAIL-001 export/cascade verification and tracking documents only; application/dependency changes are committed.
+- **Commands already run:** dependency tree/advisory review; `npm audit`; router/full frontend/build; legacy follow-up/backend worker/UI; export/backup/daily worker/cascade focused tests; full backend. See V-126–V-139.
+- **Test results:** npm audit 0 vulnerabilities; router focused 24/24; frontend 49/49 suites and 190/190 tests; production build passes. MAIL-001 export/cascade focused 16/16, legacy follow-up/backend worker 10/10, legacy UI 2/2 and full backend 622/622 pass.
 - **Services currently running:** none started intentionally. Exact task-owned hung Jest/build Node processes were stopped; Codex browser runtimes were not touched. Pre-existing Docker services were not changed.
 - **Temporary files or processes:** none. No provider account, private email, external model, paid service or production service was accessed.
 - **Production changes currently active:** none. No deployment, migration, provider connection/sync/send or production payload occurred.
 - **Rollback status:** revert `ee5ef7e` to stop recovery, then `449faeb` to remove the composer; keep admission disabled before reverting `123fc55`/`e9937ac` and downgrade the ledger before reverting `653f011`. No production migration/deploy/provider grant occurred.
-- **Uncommitted changes:** MAIL-001 legacy-send evidence/tracking only; commit/push before editing export/deletion code.
+- **Uncommitted changes:** MAIL-001 export/cascade evidence/tracking only; commit/push before the next application increment.
 - **Known failures:** durable/new-message drafts, export coverage, full thread/category actions and non-Gmail review remain; existing accounts need re-consent and IMAP stays read-only. Browser/provider/MariaDB/production unavailable or unverified; recovery scan performance is unmeasured at large ledger scale; Jest open handles; SEC-006 parser dependency work is still separately gated; parser isolation remains SEC-007. DEP-001 still needs remote CI/live confirmation.
-- **Exact next action:** commit/push V-138 tracking, then trace export DTO/archive and account/job deletion cascades for `EmailSendAttempt`; implement the smallest owner-readable metadata export and regression tests without exporting recipient/subject/body (which are not stored in the ledger).
+- **Exact next action:** commit/push V-139 tracking, then inventory Gmail/Graph/IMAP read/unread/archive/pin/read-later/spam/trash contracts and job-workspace embedding. Do not invent unsupported cross-provider actions; expose capability differences and reuse the canonical detail/link domain.
 - **Work that can continue independently:** remaining MAIL-001 repository work and later UX packages. SEC-006/007 await package-index permission; PROD-001/003/004 await production access.
 - **Decisions still required from the user:** none for synthetic/code-inspected repository work. Any provider connection or send test, internet/package upgrades, private data, external/paid providers and production actions retain explicit approval/safety gates; SEC-009 retention/legal policy remains unresolved.