X/Twitter structural support + per-package tsconfig scoping

X/Twitter (live posting gated on an X developer app, registered separately):
- schema: add 'twitter' to OutletSchema (sanitize 280-char limit already present).
- packages/twitter-client: X API v2 client (POST /2/tweets, OAuth2 user Bearer),
  injectable fetch, 280-char guard; 4 contract tests.
- apps/scheduler/src/dispatch.ts: makeOutletDispatcher routes by outlet
  (linkedin.* -> linkedin, twitter -> twitter), fail-closed for unconfigured
  outlets; 4 tests. main.ts wires both outlets fail-closed until creds exist.

Monorepo fix: add a local tsconfig.json (extends root, include src) to each
package + non-admin app. Without it, every package's `tsc --noEmit` compiled the
WHOLE repo via the root config (no JSX/DOM) and choked on the admin .tsx — masked
until now by turbo build caching.

Tests: 135 passing + 13 gated across 12 tasks.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

bun.lock

@@ -119,6 +119,14 @@
         "vitest": "^2.1.0",
       },
     },
+    "packages/twitter-client": {
+      "name": "@stargue/twitter-client",
+      "version": "0.1.0",
+      "devDependencies": {
+        "typescript": "^5.7.0",
+        "vitest": "^2.1.0",
+      },
+    },
   },
   "packages": {
     "@alloc/quick-lru": ["@alloc/quick-lru@5.2.0", "", {}, "sha512-UrcABB+4bUrFABwbluTIBErXwvbsU/V7TZWfmbgJfbkwiBuziS9gxdODUyuiecfdGQ85jglMW6juS3+z5TsKLw=="],
@@ -357,6 +365,8 @@
 
     "@stargue/schema": ["@stargue/schema@workspace:packages/schema"],
 
+    "@stargue/twitter-client": ["@stargue/twitter-client@workspace:packages/twitter-client"],
+
     "@swc/helpers": ["@swc/helpers@0.5.15", "", { "dependencies": { "tslib": "^2.8.0" } }, "sha512-JQ5TuMi45Owi4/BIMAJBoSQoOJu12oOk/gADqlcUL9JEdHB8vyjUSsxqeNXnmXHjYKMi2WcYtezGEEhqUI/E2g=="],
 
     "@tailwindcss/node": ["@tailwindcss/node@4.3.0", "", { "dependencies": { "@jridgewell/remapping": "^2.3.5", "enhanced-resolve": "^5.21.0", "jiti": "^2.6.1", "lightningcss": "1.32.0", "magic-string": "^0.30.21", "source-map-js": "^1.2.1", "tailwindcss": "4.3.0" } }, "sha512-aFb4gUhFOgdh9AXo4IzBEOzBkkAxm9VigwDJnMIYv3lcfXCJVesNfbEaBl4BNgVRyid92AmdviqwBUBRKSeY3g=="],