docs: link completion criteria to Gitea issues and add issue tracking guidance

- Created 52 Gitea issues across milestones 1-7, one per completion criterion
- Each criterion now links to its corresponding issue ([#N](url) format)
- Milestone Tracking sections updated with Issue Updates subsection:
  when/how to comment, close issues via CLI or web UI
- Phases 4-7 criteria converted from plain bullets to checkbox format

docs/plans/phases/phase-2-verification.md

@@ -25,6 +25,23 @@ proceeding to library mapping and porting.
 
 This phase corresponds to **Milestone 2** in [Gitea](https://gitea.dohertylan.com/dohertj2/natsnet/milestone/2). When starting this phase, verify the milestone is open. Assign relevant issues to this milestone as work progresses.
 
+### Issue Updates
+
+Each completion criterion has a corresponding Gitea issue. Update issues as you work:
+
+- **Starting a criterion**: Add a comment noting work has begun
+- **Blocked**: Add a comment describing the blocker
+- **Complete**: Close the issue with a comment summarizing the result (e.g., counts, verification output)
+
+Close issues via CLI:
+```bash
+curl -s -X PATCH "https://gitea.dohertylan.com/api/v1/repos/dohertj2/natsnet/issues/{N}" \
+  -H "Content-Type: application/json" \
+  -H "Authorization: token $GITEA_TOKEN" \
+  -d '{"state":"closed"}'
+```
+Or close via the Gitea web UI.
+
 ## Steps
 
 ### Step 1: Generate the summary report
@@ -256,19 +273,19 @@ dotnet run --project tools/NatsNet.PortTracker -- report export \
 
 Phase 2 is complete when ALL of the following are true:
 
-- [ ] Source file counts on disk match distinct `go_file` counts in the database
+- [ ] [#9](https://gitea.dohertylan.com/dohertj2/natsnet/issues/9) Source file counts on disk match distinct `go_file` counts in the database
       (within a small margin for intentionally excluded directories).
-- [ ] Feature counts from `grep` are within 5% of the database count (AST is the
+- [ ] [#10](https://gitea.dohertylan.com/dohertj2/natsnet/issues/10) Feature counts from `grep` are within 5% of the database count (AST is the
       authoritative source).
-- [ ] Test function counts from `grep` match the database count closely.
-- [ ] No orphaned features (all linked to valid modules).
-- [ ] No orphaned tests (all linked to valid modules).
-- [ ] No broken test-to-feature links.
-- [ ] No dangling dependency references.
-- [ ] Dependency graph is reviewed -- circular deps (if any) are acknowledged.
-- [ ] `dependency ready` returns at least one item (the graph has valid roots).
-- [ ] Library mappings table contains all external imports.
-- [ ] `phase check 1` passes with all items except "All libraries mapped" checked.
+- [ ] [#11](https://gitea.dohertylan.com/dohertj2/natsnet/issues/11) Test function counts from `grep` match the database count closely.
+- [ ] [#12](https://gitea.dohertylan.com/dohertj2/natsnet/issues/12) No orphaned features (all linked to valid modules).
+- [ ] [#13](https://gitea.dohertylan.com/dohertj2/natsnet/issues/13) No orphaned tests (all linked to valid modules).
+- [ ] [#14](https://gitea.dohertylan.com/dohertj2/natsnet/issues/14) No broken test-to-feature links.
+- [ ] [#15](https://gitea.dohertylan.com/dohertj2/natsnet/issues/15) No dangling dependency references.
+- [ ] [#16](https://gitea.dohertylan.com/dohertj2/natsnet/issues/16) Dependency graph is reviewed -- circular deps (if any) are acknowledged.
+- [ ] [#17](https://gitea.dohertylan.com/dohertj2/natsnet/issues/17) `dependency ready` returns at least one item (the graph has valid roots).
+- [ ] [#18](https://gitea.dohertylan.com/dohertj2/natsnet/issues/18) Library mappings table contains all external imports.
+- [ ] [#19](https://gitea.dohertylan.com/dohertj2/natsnet/issues/19) `phase check 1` passes with all items except "All libraries mapped" checked.
 - [ ] Close the Phase 2 milestone in Gitea:
   ```bash
   curl -s -X PATCH "https://gitea.dohertylan.com/api/v1/repos/dohertj2/natsnet/milestones/2" \