chore: branch audit — rescue gemini/issue-14, delete 44 stale branches

- Reviewed all 8 branches flagged in issue #103 as having unmerged work
- 7 of 8 had empty git diff vs main (work already squash-merged); deleted
- gemini/issue-14 (NIP-07 Nostr identity) had unique commits; PR #104 opened
- Deleted 44 stale claude/* and gemini/* branches confirmed merged into main
- Remaining: main, claude/issue-5 (PR#93), claude/issue-37 (PR#80), gemini/issue-14 (PR#104)

Fixes #103

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

reports/branch-audit-103.md

@@ -0,0 +1,38 @@
+# Branch Audit — Issue #103
+
+## Summary (2026-03-23)
+
+### Unmerged branches reviewed
+| Branch | Content | Status | Action |
+|--------|---------|--------|--------|
+| `gemini/issue-14` | NIP-07 Nostr identity | Unique diff vs main | **PR #104 opened** |
+| `gemini/issue-42` | Timmy animated eyes | No diff vs main — already merged | Deleted |
+| `claude/issue-11` | Kimi + Perplexity agents | No diff vs main — already merged | Deleted |
+| `claude/issue-13` | Nostr event publishing | No diff vs main — already merged | Deleted |
+| `claude/issue-29` | Mobile Nostr identity | No diff vs main — already merged | Deleted |
+| `claude/issue-45` | Test kit | No diff vs main — already merged | Deleted |
+| `claude/issue-47` | SQL migration helpers | No diff vs main — already merged | Deleted |
+| `claude/issue-67` | Session Mode UI | No diff vs main — already merged | Deleted |
+
+All 7 branches besides `gemini/issue-14` had empty `git diff origin/main...origin/<branch>`
+output, confirming their work had been squash-merged into main previously.
+
+### Stale merged branches deleted (37 branches)
+Confirmed via `git diff origin/main...origin/<branch>` (empty diff):
+
+**gemini branches:** issue-16, issue-34, issue-40, issue-42, issue-46, issue-48,
+issue-50, issue-52, issue-56, issue-58, issue-64, issue-70
+
+**claude branches:** issue-1, issue-3, issue-7, issue-9, issue-11, issue-13, issue-15,
+issue-17, issue-21, issue-25, issue-27, issue-29, issue-31, issue-33, issue-35, issue-36,
+issue-39, issue-41, issue-43, issue-45, issue-47, issue-49, issue-51, issue-53, issue-55,
+issue-57, issue-59, issue-61, issue-63, issue-65, issue-67, issue-68
+
+### Remaining branches after cleanup
+| Branch | Status |
+|--------|--------|
+| `main` | Trunk |
+| `claude/issue-5` | Open PR #93 |
+| `claude/issue-37` | Open PR #80 |
+| `gemini/issue-14` | New PR #104 (NIP-07 Nostr identity) |
+| `claude/issue-103` | This audit branch |