chore: rename quicproquo → quicprochat in docs, Docker, CI, and packaging

Rename all project references from quicproquo/qpq to quicprochat/qpc
across documentation, Docker configuration, CI workflows, packaging
scripts, operational configs, and build tooling.

- Docker: crate paths, binary names, user/group, data dirs, env vars
- CI: workflow crate references, binary names, artifact names
- Docs: all markdown files under docs/, SDK READMEs, book.toml
- Packaging: OpenWrt Makefile, init script, UCI config (file renames)
- Scripts: justfile, dev-shell, screenshot, cross-compile, ai_team
- Operations: Prometheus config, alert rules, Grafana dashboard
- Config: .env.example (QPQ_* → QPC_*), CODEOWNERS paths
- Top-level: README, CONTRIBUTING, ROADMAP, CLAUDE.md

sdks/typescript/src/client.ts

@@ -1,8 +1,8 @@
 /**
- * High-level quicproquo client.
+ * High-level quicprochat client.
  *
  * Combines the WASM crypto layer with a WebSocket transport to provide
- * a type-safe API for interacting with a quicproquo server.
+ * a type-safe API for interacting with a quicprochat server.
  *
  * The crypto helpers work standalone (no server connection required).
  * Server RPC methods require a WebSocket bridge proxy since the native
@@ -30,7 +30,7 @@ export class QpqClient {
   }
 
   /**
-   * Connect to a quicproquo server via WebSocket bridge.
+   * Connect to a quicprochat server via WebSocket bridge.
    *
    * NOTE: The server must expose a WebSocket-to-capnp bridge endpoint.
    * See the project documentation for bridge proxy setup.

sdks/typescript/src/index.ts

@@ -1,5 +1,5 @@
 /**
- * @quicproquo/client -- TypeScript SDK for quicproquo E2E encrypted messenger.
+ * @quicprochat/client -- TypeScript SDK for quicprochat E2E encrypted messenger.
  *
  * The SDK provides:
  *  - WASM-powered crypto (Ed25519, hybrid X25519+ML-KEM-768, sealed sender)

sdks/typescript/src/transport.ts

@@ -1,5 +1,5 @@
 /**
- * Transport abstraction for communicating with a quicproquo server.
+ * Transport abstraction for communicating with a quicprochat server.
  *
  * The native qpq server speaks Cap'n Proto RPC over QUIC/TCP + Noise_XX.
  * Browsers cannot open raw TCP sockets, so this SDK assumes a WebSocket

sdks/typescript/src/types.ts

@@ -1,4 +1,4 @@
-/** Options for connecting to a quicproquo server. */
+/** Options for connecting to a quicprochat server. */
 export interface ConnectOptions {
   /** WebSocket URL, e.g. ws://host:port or wss://host:port */
   addr: string;