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+# Verification Note: pdftract-2um5s (Phase 6.10: pdftract doctor coordinator)
+
+## Summary
+
+The pdftract doctor subcommand is fully implemented and functional. All 4 child task beads are closed:
+- pdftract-1w5u1 (6.10.2: Output formats) - CLOSED
+- pdftract-4q8cq (6.10.1: Check definitions) - CLOSED
+- pdftract-4sky1 (6.10.3: Exit code policy) - CLOSED
+- pdftract-653ah (6.10.4: Runbook integration) - CLOSED
+
+## Acceptance Criteria Status
+
+### PASS
+- **All 4 child task beads closed**: YES
+- **Module structure**: `crates/pdftract-cli/src/doctor/` contains `checks/` and `output/` submodules
+- **No feature flag**: doctor ships in default-feature binary (verified with `cargo build --release`)
+- **Exit code policy**: Verified - exits 0 for OK/WARN, exits 1 for FAIL (tested locally)
+- **JSON output**: `--json` flag produces valid JSON (tested locally)
+- **Features flag**: `--features` flag lists compiled features (tested locally)
+- **Catch_unwind protection**: Every check wrapped in `run_check_safe()` (mod.rs:97-118)
+- **Runbook integration**: docs/operations/manual-platform-smoke.md exists with doctor as Step 1
+- **Unit tests**: 12 doctor tests pass (cache_dir, binary, locale, memory, temp_dir, ulimit)
+
+### WARN (Minor structural note)
+- **runbook.rs**: Acceptance criteria mentioned `runbook.rs` in module structure, but actual implementation (per child bead pdftract-653ah) used documentation integration instead. The runbook at docs/operations/manual-platform-smoke.md fully references doctor output with troubleshooting tables.
+
+## Verification Commands
+
+```bash
+# Build
+cargo build --release
+
+# Test basic doctor output
+./target/release/pdftract doctor
+
+# Test JSON output
+./target/release/pdftract doctor --json | jq .
+
+# Test features flag
+./target/release/pdftract doctor --features
+
+# Run unit tests
+cargo test --bin pdftract doctor
+
+# Verify runbook exists
+ls -la docs/operations/manual-platform-smoke.md
+```
+
+## Child Beads Verification
+
+All 4 child beads verified as CLOSED:
+```bash
+bf show pdftract-1w5u1  # 6.10.2: Output formats - Status: closed
+bf show pdftract-4q8cq  # 6.10.1: Check definitions - Status: closed
+bf show pdftract-4sky1  # 6.10.3: Exit code policy - Status: closed
+bf show pdftract-653ah  # 6.10.4: Runbook integration - Status: closed
+```
+
+## Plan Reference
+
+Phase 6.10 pdftract doctor (lines 2477-2532 in `/docs/plan/plan.md`)
+
+All critical tests from plan section 6.10 are implemented:
+- Exit code 0 on OK/WARN, 1 on FAIL (line 2538-2539)
+- Feature-gated checks show N/A in JSON (line 2543)
+- catch_unwind protection for every check (INV-8)
+- Sequential check execution with <10s budget
+
+## Conclusion
+
+The coordinator bead pdftract-2um5s is complete. All child work is integrated and functional. The minor deviation from acceptance criteria (runbook.rs vs docs integration) reflects the actual implementation approach taken by child bead pdftract-653ah, which produced comprehensive runbook documentation at docs/operations/manual-platform-smoke.md.