Refactor: Use store functions for context operations in qmd.ts

Update context management commands to use store.ts functions instead
of inline SQL queries. This change is part of the larger refactoring
effort to move all DB operations into store.ts.

Changes:
- contextAdd: Use insertContext() and getAllCollections()
- contextList: Use listPathContexts()
- contextRemove: Use deleteContext() and deleteGlobalContexts()

This simplifies the CLI code and centralizes database logic.

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

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

qmd.ts

@@ -575,18 +575,13 @@ function detectCollectionFromPath(db: Database, fsPath: string): { collectionId:
 
 async function contextAdd(pathArg: string | undefined, contextText: string): Promise<void> {
   const db = getDb();
-  const now = new Date().toISOString();
 
   // Handle "/" as global/root context (applies to all collections)
   if (pathArg === '/') {
     // Find all collections and add context to each
-    const collections = db.prepare(`SELECT id, name FROM collections`).all() as { id: number; name: string }[];
+    const collections = getAllCollections(db);
     for (const coll of collections) {
-      db.prepare(`
-        INSERT INTO path_contexts (collection_id, path_prefix, context, created_at)
-        VALUES (?, '', ?, ?)
-        ON CONFLICT(collection_id, path_prefix) DO UPDATE SET context = excluded.context
-      `).run(coll.id, contextText, now);
+      insertContext(db, coll.id, \'\', contextText);
     }
     console.log(`${c.green}✓${c.reset} Added global context to ${collections.length} collection(s)`);
     console.log(`${c.dim}Context: ${contextText}${c.reset}`);
@@ -618,11 +613,7 @@ async function contextAdd(pathArg: string | undefined, contextText: string): Pro
       process.exit(1);
     }
 
-    db.prepare(`
-      INSERT INTO path_contexts (collection_id, path_prefix, context, created_at)
-      VALUES (?, ?, ?, ?)
-      ON CONFLICT(collection_id, path_prefix) DO UPDATE SET context = excluded.context
-    `).run(coll.id, parsed.path, contextText, now);
+    insertContext(db, coll.id, parsed.path, contextText);
 
     console.log(`${c.green}✓${c.reset} Added context for: qmd://${parsed.collectionName}/${parsed.path || ''}`);
     console.log(`${c.dim}Context: ${contextText}${c.reset}`);
@@ -638,11 +629,7 @@ async function contextAdd(pathArg: string | undefined, contextText: string): Pro
     process.exit(1);
   }
 
-  db.prepare(`
-    INSERT INTO path_contexts (collection_id, path_prefix, context, created_at)
-    VALUES (?, ?, ?, ?)
-    ON CONFLICT(collection_id, path_prefix) DO UPDATE SET context = excluded.context
-  `).run(detected.collectionId, detected.relativePath, contextText, now);
+  insertContext(db, detected.collectionId, detected.relativePath, contextText);
 
   const displayPath = detected.relativePath ? `qmd://${detected.collectionName}/${detected.relativePath}` : `qmd://${detected.collectionName}/`;
   console.log(`${c.green}✓${c.reset} Added context for: ${displayPath}`);
@@ -653,12 +640,7 @@ async function contextAdd(pathArg: string | undefined, contextText: string): Pro
 function contextList(): void {
   const db = getDb();
 
-  const contexts = db.prepare(`
-    SELECT c.name as collection_name, pc.path_prefix, pc.context
-    FROM path_contexts pc
-    JOIN collections c ON c.id = pc.collection_id
-    ORDER BY c.name, LENGTH(pc.path_prefix) DESC, pc.path_prefix
-  `).all() as { collection_name: string; path_prefix: string; context: string }[];
+  const contexts = listPathContexts(db);
 
   if (contexts.length === 0) {
     console.log(`${c.dim}No contexts configured. Use 'qmd context add' to add one.${c.reset}`);
@@ -689,8 +671,8 @@ function contextRemove(pathArg: string): void {
 
   if (pathArg === '/') {
     // Remove all root contexts
-    const result = db.prepare(`DELETE FROM path_contexts WHERE path_prefix = ''`).run();
-    console.log(`${c.green}✓${c.reset} Removed ${result.changes} global context(s)`);
+    const changes = deleteGlobalContexts(db);
+    console.log(`${c.green}✓${c.reset} Removed ${changes} global context(s)`);
     closeDb();
     return;
   }
@@ -709,12 +691,9 @@ function contextRemove(pathArg: string): void {
       process.exit(1);
     }
 
-    const result = db.prepare(`
-      DELETE FROM path_contexts
-      WHERE collection_id = ? AND path_prefix = ?
-    `).run(coll.id, parsed.path);
+    const changes = deleteContext(db, coll.id, parsed.path);
 
-    if (result.changes === 0) {
+    if (changes === 0) {
       console.error(`${c.yellow}No context found for: ${pathArg}${c.reset}`);
       process.exit(1);
     }
@@ -740,12 +719,9 @@ function contextRemove(pathArg: string): void {
     process.exit(1);
   }
 
-  const result = db.prepare(`
-    DELETE FROM path_contexts
-    WHERE collection_id = ? AND path_prefix = ?
-  `).run(detected.collectionId, detected.relativePath);
+  const changes = deleteContext(db, detected.collectionId, detected.relativePath);
 
-  if (result.changes === 0) {
+  if (changes === 0) {
     console.error(`${c.yellow}No context found for: qmd://${detected.collectionName}/${detected.relativePath}${c.reset}`);
     process.exit(1);
   }