feat(cli): claudemesh skill prints bundled SKILL.md (v1.18.0)

Zero-install access to the protocol reference: a fresh `npm i -g
claudemesh-cli` user (or someone running the prebuilt binary) can
now `claudemesh skill | claude --skill-add -` without copying any
files into ~/.claude/skills. The skill markdown is embedded into
the CLI bundle at build time via Bun's text-import attribute.

Also replaces two `<> ALL(...)` raw SQL fragments in the dashboard
unread-count queries with drizzle's notInArray() helper — matches
the same fix already applied to /v1/me/topics in the API package.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/cli/src/commands/skill.ts

@@ -0,0 +1,21 @@
+/**
+ * `claudemesh skill` — print the bundled SKILL.md to stdout.
+ *
+ * Zero-install access: the skill is embedded into the binary at build
+ * time via Bun's text-import attribute, so a fresh `npm i -g` user
+ * (or someone running the prebuilt binary) can pipe the contents into
+ * Claude Code (or anywhere else) without copying files into
+ * ~/.claude/skills.
+ *
+ *   claudemesh skill | claude --skill-add -
+ *   claudemesh skill > /tmp/cm.md
+ */
+
+import skillContent from "../../skills/claudemesh/SKILL.md" with { type: "text" };
+import { EXIT } from "~/constants/exit-codes.js";
+
+export async function runSkill(): Promise<number> {
+  process.stdout.write(skillContent);
+  if (!skillContent.endsWith("\n")) process.stdout.write("\n");
+  return EXIT.SUCCESS;
+}