feat(reconciliation): implement deterministic state reconciliation engine and post-commit hook

- Implement ReconciliationEngine in server/src/handlers/reconciliation.rs
- Auto-transition ADRs to implemented, resolve tech debts, and cascade task unblocking
- Ingest git commit events via POST /api/git/commit and scripts/git-reconcile.py post-commit hook
- Add universal pagination, search filtering, and keyboard navigation to dashboard
- Implement non-destructive task TTL expiry sweeper and gate verification
- Implements: ADR-0102, ADR-0103

justfile

@@ -190,3 +190,9 @@ all-nvim-wsl: build-nvim deploy-nvim
 
 # Complete lifecycle: stop, build, deploy, start, and verify WSL server
 all-server-wsl port="3000": (stop port) build-server deploy-server (start port) (verify port)
+
+# Install git post-commit hook for automatic ADR/Task/TechDebt state reconciliation
+install-git-hooks:
+    @Write-Host "Installing git post-commit reconciliation hook..." -ForegroundColor Cyan
+    -& { $hookContent = "#!/bin/sh`npython3 scripts/git-reconcile.py 2>/dev/null || python scripts/git-reconcile.py 2>/dev/null || true`n"; $hookPath = ".git\hooks\post-commit"; [System.IO.File]::WriteAllText($hookPath, $hookContent); Write-Host "✅ Git post-commit hook installed to $hookPath" -ForegroundColor Green }
+