feat(CF-580): Add schema support and metadata tracking for session notes recovery

- Migration 025: Add 'abandoned' status to sessions CHECK constraint (fixes blocking issue)
- Migration 026: Add recovery metadata columns (recovered_from, recovered_at) to track note recovery source
- Update sessionRecoverOrphaned to recover notes from temp files when marking sessions abandoned
- Update notes-parser to track recovery source and timestamp for analytics

These changes complete Priority 3, 5 and part of Priority 1 for CF-572 Session Notes Loss fix.

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

src/tools/sessions.ts

@@ -487,12 +487,29 @@ export async function sessionRecoverOrphaned(args: { project?: string }): Promis
       results.push(
         `✓ Session ${session.project} #${session.session_number} marked as abandoned`
       );
+
+      // Attempt to recover notes from temp file
+      if (session.working_directory) {
+        const tempFilePath = `${session.working_directory}/.claude-session/${session.id}/notes.md`;
+
+        try {
+          const { recoverNotesFromTempFile } = await import('../utils/notes-parser.js');
+          const recovered = await recoverNotesFromTempFile(session.id, tempFilePath, 'recovered');
+
+          if (recovered > 0) {
+            results.push(`  → Recovered ${recovered} note(s) from temp file`);
+            totalNotesRecovered += recovered;
+          }
+        } catch (err) {
+          results.push(`  ⚠ Could not recover notes: ${err instanceof Error ? err.message : String(err)}`);
+        }
+      }
     } catch (err) {
       results.push(`✗ Failed to mark session ${session.id} as abandoned: ${err}`);
     }
   }
 
-  return `Recovered ${orphanedSessions.length} orphaned session(s):\n${results.join('\n')}`;
+  return `Recovered ${orphanedSessions.length} orphaned session(s), ${totalNotesRecovered} notes:\n${results.join('\n')}`;
 }
 
 /**