feat(cli): skip-context-sources menu + clack-style tree picker UX (#213)

* feat(cli): add 'skip context sources' option to database setup menu

After databases are configured, the post-setup menu now offers a 'Skip
context sources' choice equivalent to passing --skip-sources, which
plumbs through KtxSetupDatabasesResult.skipSources to bypass the
context-source step in the same run.

* feat(cli): standardize tree picker UX after clack autocomplete-multiselect

Search is always on (no '/' to enter): typed printable chars feed the
query, Tab toggles selection on the focused node without leaving the
search bar, and Space toggles only after arrow-key navigation
(isNavigating); otherwise it is appended to the query. Esc clears a
non-empty query before quitting, Ctrl+A and Ctrl+N replace bare-letter
bulk bindings, and the cursor refocuses on the first match when the
query change would hide it.

packages/cli/src/setup.test.ts

@@ -1641,6 +1641,67 @@ describe('setup status', () => {
     expect(calls).toEqual(['model', 'embeddings', 'databases', 'sources']);
   });
 
+  it('passes context-source skip selection from database setup into the sources step', async () => {
+    const calls: string[] = [];
+    const io = makeIo();
+    await writeFile(join(tempDir, 'ktx.yaml'), ['connections: {}', ''].join('\n'), 'utf-8');
+
+    await expect(
+      runKtxSetup(
+        {
+          command: 'run',
+          projectDir: tempDir,
+          mode: 'auto',
+          agents: false,
+          skipAgents: true,
+          inputMode: 'disabled',
+          yes: true,
+          cliVersion: '0.2.0',
+          skipLlm: true,
+          skipEmbeddings: true,
+          skipDatabases: false,
+          skipSources: false,
+          databaseSchemas: [],
+        },
+        io.io,
+        {
+          model: async () => {
+            calls.push('model');
+            return { status: 'skipped', projectDir: tempDir };
+          },
+          embeddings: async () => {
+            calls.push('embeddings');
+            return { status: 'skipped', projectDir: tempDir };
+          },
+          databases: async () => {
+            calls.push('databases');
+            return {
+              status: 'ready',
+              projectDir: tempDir,
+              connectionIds: ['warehouse'],
+              skipSources: true,
+            };
+          },
+          sources: async (args) => {
+            expect(args.skipSources).toBe(true);
+            calls.push('sources');
+            return { status: 'skipped', projectDir: tempDir };
+          },
+          runtime: async () => {
+            calls.push('runtime');
+            return runtimeReady(tempDir);
+          },
+          context: async () => {
+            calls.push('context');
+            return { status: 'ready', projectDir: tempDir, runId: 'setup-context-local-test' };
+          },
+        },
+      ),
+    ).resolves.toBe(0);
+
+    expect(calls).toEqual(['model', 'embeddings', 'databases', 'sources', 'runtime', 'context']);
+  });
+
   it.each([
     {
       backend: 'vertex',