fix(projman): add mandatory CHANGELOG and versioning to sprint-close workflow

Problem: Version workflow was documented but not enforced in sprint-close.
After completing sprints, CHANGELOG wasn't updated and releases weren't created.

Solution:
- Add "Update CHANGELOG" as mandatory step 7 in sprint-close
- Add "Version Check" as step 8 with /suggest-version and release.sh
- Update orchestrator agent with CHANGELOG and version reminders
- Add V04.1.0 wiki workflow changes to CHANGELOG [Unreleased]
- Document MCP bug #160 in Known Issues

This ensures versioning workflow is part of the sprint close process,
not just documented in CLAUDE.md.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased]
 
 ### Added
+- **projman:** Wiki-based planning workflow enhancement (V04.1.0)
+  - Flexible input source detection in `/sprint-plan` (file, wiki, or conversation)
+  - Wiki proposal and implementation page creation during sprint planning
+  - Wiki reference linking in created issues
+  - Wiki status updates in `/sprint-close` (Implemented/Partial/Failed)
+  - Metadata section in lessons learned with implementation link for traceability
+  - New `/proposal-status` command for viewing proposal/implementation tree
 - **projman:** `/suggest-version` command - Analyzes CHANGELOG and recommends semantic version bump
 - **projman:** SessionStart hook now suggests sprint planning when open issues exist without milestone
 - **projman:** SessionStart hook now warns about unreleased CHANGELOG entries
@@ -21,6 +28,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Documentation drift: COMMANDS-CHEATSHEET.md was missing data-platform plugin added in v4.0.0
 - Proactive sprint planning: projman now suggests `/sprint-plan` at session start when unplanned issues exist
 
+### Known Issues
+- **MCP Bug #160:** `update_wiki_page` tool renames pages to "unnamed" when page_name contains URL-encoded characters (`:` → `%3A`). Workaround: use `create_wiki_page` to overwrite instead.
+
 ---
 
 ## [4.0.0] - 2026-01-25