feat(cli): smart defaults and flatter command surface for ktx (#177)

Bare invocations now do the obvious thing instead of erroring out, and mode-as-subcommand patterns collapse into flags on the parent. No new top-level commands.

- `ktx ingest` (bare) ingests every configured connection. The `text` subcommand is gone; capture inline notes with `ktx ingest --text "..."` and files with `ktx ingest --file path` (use `-` for stdin). `--text`/`--file` reject a positional connection id; pass `--connection-id` to tag captured notes.
- `ktx connection` (bare) lists; `ktx connection test` (bare) tests every configured connection.
- `ktx wiki` and `ktx sl` flatten `list`/`search`: bare lists, with a `[query...]` positional searches (multi-word joined with spaces). `sl validate` and `sl query` stay as distinct verbs and now read `--connection-id` from the parent.
- `ktx mcp` (bare) prints daemon status.

Adds a shared `resolveConnectionSelection` helper consumed by ingest and connection test. Updates README, docs-site cli-reference and guides, next-steps strings, agent SKILL templates, and all affected tests. Per-package type-check, unit tests (605), smoke tests, and dead-code checks all pass.

scripts/examples-docs.test.mjs

@@ -165,10 +165,10 @@ describe('standalone example docs', () => {
 
     for (const command of [
       'ktx status --json',
-      'ktx sl list --json',
-      'ktx sl search "revenue" --json',
+      'ktx sl --json',
+      'ktx sl "revenue" --json',
       'ktx sl query',
-      'ktx wiki search "revenue recognition" --json',
+      'ktx wiki "revenue recognition" --json',
     ]) {
       assert.match(servingAgents, new RegExp(command.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')));
     }
@@ -252,7 +252,7 @@ describe('standalone example docs', () => {
     const localWarehouseReadme = await readText('examples/local-warehouse/README.md');
 
     assert.match(ingestReference, /ktx ingest <connectionId>/);
-    assert.match(ingestReference, /ktx ingest --all --deep/);
+    assert.match(ingestReference, /Build every configured connection/);
     assert.match(ingestReference, /--query-history-window-days <days>/);
     assert.match(buildingContext, /ktx ingest <connectionId>/);
     assert.match(buildingContext, /ktx ingest --all/);

scripts/package-artifacts.mjs

@@ -688,7 +688,6 @@ try {
     'exec',
     'ktx',
     'wiki',
-    'search',
     'revenue',
     '--json',
     '--limit',
@@ -731,7 +730,6 @@ try {
     'exec',
     'ktx',
     'sl',
-    'search',
     'orders',
     '--json',
     '--connection-id',

scripts/package-artifacts.test.mjs

@@ -475,9 +475,9 @@ describe('verification snippets', () => {
     assert.doesNotMatch(source, /startSemanticDaemon/);
     assert.match(source, /run\('pnpm', \[\s*'exec',\s*'ktx',\s*'setup'/);
     assert.match(source, /wiki', 'global', 'revenue\.md'/);
-    assert.match(source, /run\('pnpm', \[\s*'exec',\s*'ktx',\s*'wiki',\s*'search'/);
+    assert.match(source, /run\('pnpm', \[\s*'exec',\s*'ktx',\s*'wiki',\s*'revenue'/);
     assert.match(source, /semantic-layer', 'warehouse', 'orders\.yaml'/);
-    assert.match(source, /run\('pnpm', \[\s*'exec',\s*'ktx',\s*'sl',\s*'search',\s*'orders'/);
+    assert.match(source, /run\('pnpm', \[\s*'exec',\s*'ktx',\s*'sl',\s*'orders'/);
     assert.match(source, /orders\.order_count/);
     assert.match(source, /node:sqlite/);
     assert.match(source, /driver: sqlite/);