docs: Update Phase 0 with specific test fix requirements

Per ADR-012, Phase 0 now specifies:
- 5 tests to REMOVE (broken multiprocessing)
- 4 tests to FIX (brittle assertions)
- 1 test to RENAME (misleading name)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

starpunk/routes/search.py

@@ -149,7 +149,7 @@ def search_page():
             error = "Full-text search is not configured on this server"
         else:
             try:
-                results = search_notes(
+                raw_results = search_notes(
                     query=query,
                     db_path=db_path,
                     published_only=published_only,
@@ -163,7 +163,7 @@ def search_page():
                 from markupsafe import escape, Markup
 
                 formatted_results = []
-                for r in results:
+                for r in raw_results:
                     # Escape the snippet but allow <mark> tags
                     snippet = r["snippet"]
                     # Simple approach: escape all HTML, then unescape our mark tags