docs: reposition around team-coordination, sync specs to code, prune stale docs

Reframe README around the real bottleneck (human coordination, not
engineering ability) with the "five-minute meeting" cost story; rewrite the
demo script to match. Update gemini/livekit/mongodb/digitalocean specs to
reflect shipped code (Gemini Live agent, TTS, embeddings, Lyria via
Interactions API; current API routes; hermes_jobs collections). Add hermes.md.
Rename graph.md -> cont_learning.md. Remove outdated/dead docs (agent-learning
scaffolding, graph-discovery, handoffs, superpowers, idea/plan/demo-setup) and
the bundled LiveKit starter under examples/. Rewire CLAUDE.md doc-first gate
off the deleted PLAN.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LuV8W8oNYRsDWKoqK8Mkqc

package.json

@@ -26,9 +26,6 @@
     "hermes:sync-deploy": "node scripts/hermes-sync-deploy.mjs",
     "hermes:install": "node scripts/install-hermes-ops.mjs",
     "healthcheck:public": "node scripts/healthcheck-public.mjs",
-    "livekit:starter:agent": "cd examples/livekit-gemini-hacker-starter/agent && uv run agent.py dev",
-    "livekit:starter:frontend": "cd examples/livekit-gemini-hacker-starter/frontend && pnpm start --hostname 127.0.0.1 --port 3000",
-    "livekit:starter:frontend:build": "cd examples/livekit-gemini-hacker-starter/frontend && pnpm build",
     "livekit:conversation:agent": "cd agents/podman-live-conversation && uv run agent.py dev",
     "livekit:conversation:test": "cd agents/podman-live-conversation && uv run pytest",
     "verify": "pnpm lint && pnpm typecheck && pnpm build && pnpm verify:backend && pnpm verify:frontend",