docs: slim README, move detail into per-app and contributor docs

README down to the Containr skeleton: header, three-screenshot row
(rest behind <details>), features, architecture, quick start, links.
Dropped tables and sections already covered by QUICK_START.md.
Native dev commands and repo layout moved to CONTRIBUTING.md;
CLI/MCP usage moved to new per-app READMEs.

Authored By: TDvorak <[email protected]>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

apps/mcp/README.md

@@ -0,0 +1,23 @@
+# @primora/mcp
+
+Primora MCP stdio server - exposes the platform as `primora_*` tools to any
+MCP client (Claude Desktop, Cursor, etc.).
+
+## Build
+
+```bash
+npm run build --workspace @primora/mcp   # → dist/server.js
+```
+
+## Configure
+
+Point your MCP client at `node dist/server.js`. The server shares the CLI's
+config file - `primora login` once and both tools work. Env vars override:
+`PRIMORA_BASE_URL`, `PRIMORA_API_KEY`, `PRIMORA_ORG`, `PRIMORA_PROJECT`.
+
+## Tools
+
+30+ `primora_*` tools covering organizations, projects, buckets, objects,
+collections, API keys, integrations, webhooks, scheduled jobs, telemetry,
+and audit: `primora_whoami`, `primora_list_projects`,
+`primora_upload_object`, `primora_query_audit`, `primora_run_job`, …