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/wasm-crypto/Cargo.lock

@@ -429,12 +429,12 @@ name = "qpq-wasm-crypto"
 version = "0.1.0"
 dependencies = [
  "js-sys",
- "quicproquo-core",
+ "quicprochat-core",
  "wasm-bindgen",
 ]
 
 [[package]]
-name = "quicproquo-core"
+name = "quicprochat-core"
 version = "0.1.0"
 dependencies = [
  "argon2",