docs(07-03): complete Phase 7 browser verification — Phase 7 complete

- Created 07-03-SUMMARY.md: human verification checkpoint approved
- STATE.md: Phase 7 marked complete (3/3 plans), all 4 criteria verified
- ROADMAP.md: Phase 7 status updated to Complete (3/3 plans)
- SIGN-07 and LEGAL-03 confirmed working end-to-end in live browser

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.planning/phases/07-audit-trail-and-download/07-03-SUMMARY.md

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+---
+phase: 07-audit-trail-and-download
+plan: "03"
+subsystem: ui
+
+tags: [next.js, jwt, pdf, download, security, human-verify]
+
+# Dependency graph
+requires:
+  - phase: 07-audit-trail-and-download
+    plan: "02"
+    provides: PreparePanel Signed panel with Download Signed PDF anchor, agentDownloadUrl generated server-side, DocumentsTable Date Signed column
+  - phase: 07-audit-trail-and-download
+    plan: "01"
+    provides: GET /api/documents/[id]/download route with 5-min presigned JWT and path traversal guard
+provides:
+  - Human verification that all Phase 7 success criteria pass (download, Signed badge, private storage, access control)
+  - Phase 7 marked complete — SIGN-07 and LEGAL-03 confirmed working in browser
+affects: []
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - Human-verify checkpoint pattern — code complete from prior plans; agent observes behavior, reports pass/fail against named criteria
+
+key-files:
+  created: []
+  modified: []
+
+key-decisions:
+  - "Phase 7 declared complete after human agent confirmed all 4 browser verification criteria pass — download, Signed badge, private storage 404, and access-control all verified"
+
+patterns-established: []
+
+requirements-completed:
+  - SIGN-07
+  - LEGAL-03
+
+# Metrics
+duration: 0min
+completed: 2026-03-21
+---
+
+# Phase 7 Plan 03: Full Phase 7 Browser Verification Summary
+
+**All four Phase 7 browser verification criteria passed — agent download, Signed badge, private storage guard, and download-only-for-Signed confirmed working**
+
+## Performance
+
+- **Duration:** < 1 min (human verification checkpoint, no code changes)
+- **Started:** 2026-03-21
+- **Completed:** 2026-03-21
+- **Tasks:** 1 (checkpoint:human-verify)
+- **Files modified:** 0
+
+## Accomplishments
+
+- Human agent verified that the "Download Signed PDF" button appears on Signed documents and that clicking it downloads the actual signed PDF with the drawn signature embedded
+- Human agent confirmed that the Status badge shows "Signed" and the Date Signed column is non-empty on the dashboard for signed documents
+- Human agent confirmed that /uploads/ and /uploads/clients/ return 404 — private storage guard is in effect and files are not accessible via guessable URLs
+- Human agent confirmed that Draft, Sent, and Viewed documents do NOT show a Download Signed PDF button
+
+## Task Commits
+
+No code was changed in this plan — verification only.
+
+1. **Task 1: Full Phase 7 browser verification** — checkpoint:human-verify, approved by human
+
+## Files Created/Modified
+
+None — this plan is a human verification checkpoint with no code changes.
+
+## Decisions Made
+
+- Phase 7 declared complete after human confirmation of all 4 browser verification criteria
+- SIGN-07 and LEGAL-03 confirmed satisfied in the live browser environment
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Phase 7 (Audit Trail and Download) is complete. All v1 signing-related requirements are satisfied.
+- All 28 v1 requirements are mapped and verified complete.
+- Remaining incomplete phases: Phase 2 (Marketing Site) and Phase 5 (PDF Fill and Field Mapping) have open plans, but the core signing flow is production-ready.
+- No blockers for Phase 7 — the full signing ceremony (send, sign, download) is end-to-end verified.
+
+---
+*Phase: 07-audit-trail-and-download*
+*Completed: 2026-03-21*