fix: move all linked issues on PR merge (multi-issue + Task List)

[vatsalpatel]

Fixes: a PR linked to multiple issues only moved the first one on merge — the rest had to be moved by hand.

Notion issue: https://app.notion.com/p/tutero/Notion-issue-status-does-not-update-when-multiple-issues-are-linked-3a7bfd2f80ba80b08aaed61603adab8b

The bug

run() resolved only the first linked issue (issueIdFromRow → rel[0]) and read only the 🐛 Tech Issues relation. A PR fixing N issues advanced issue #1 and silently left the others. Reproduced on tutoring-app#1451, whose PR row links 2 Tech Issues — the second ("Simple Change to SUFS invoices…") was skipped.

The fix — src/config.ts, src/run.ts

• resolveIssues() — read every linked issue across both relations (🐛 Tech Issues, ✅ Task List).
• Per-issue gate — on merge, advance an issue only when all of that issue's own PRs are Merged/Closed. (PR A → issues 1 & 2, where issue 1 also has PR B: merging A moves issue 2 but holds issue 1 until B merges too.)
• Per-database status — Tech Issues merge → For QA; Task List merge → Ready For Review (Task List has no "For QA").

Verified

• Unit: resolveIssues returns all issues across both relations with per-DB status (__tests__/resolve.test.ts).
• E2E against the compiled dist/: PR A (→ 2 issues) + PR B (→ issue 1). Merging A → issue 2 For QA, issue 1 held (B open); merging B → issue 1 For QA.

🤖 Generated with Claude Code