feat(start-work): add plan name normalization and quote stripping

- Add WRAPPING_QUOTES_PATTERN to parse-user-request.ts to strip quotes from plan names
- Add normalizePlanLookupValue() to context-info-builder.ts for slug normalization
- Enhanced findPlanByName() with normalized exact and partial matching
- Allows human-readable plan names (e.g., "my feature plan") to match slugged filenames (e.g., my-feature-plan.md)

🤖 Generated with OhMyOpenCode assistance

src/hooks/start-work/parse-user-request.ts

@@ -1,5 +1,6 @@
 const KEYWORD_PATTERN = /\b(ultrawork|ulw)\b/gi
 const WORKTREE_FLAG_PATTERN = /--worktree(?:\s+(\S+))?/
+const WRAPPING_QUOTES_PATTERN = /^(["'`])([\s\S]*)\1$/
 
 export interface ParsedUserRequest {
   planName: string | null
@@ -21,9 +22,11 @@ export function parseUserRequest(promptText: string): ParsedUserRequest {
   }
 
   const cleanedArg = rawArg.replace(KEYWORD_PATTERN, "").trim()
+  const quotedPlanMatch = cleanedArg.match(WRAPPING_QUOTES_PATTERN)
+  const normalizedPlanName = quotedPlanMatch ? quotedPlanMatch[2].trim() : cleanedArg
 
   return {
-    planName: cleanedArg || null,
+    planName: normalizedPlanName || null,
     explicitWorktreePath,
   }
 }