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/python/quicprochat/__init__.py

@@ -1,8 +1,8 @@
-"""quicproquo -- Python SDK for the quicproquo E2E encrypted messenger.
+"""quicprochat -- Python SDK for the quicprochat E2E encrypted messenger.
 
 Two transport backends are available:
 
-1. **FFI** (``QpqClient.connect_ffi``): wraps the Rust ``libquicproquo_ffi``
+1. **FFI** (``QpqClient.connect_ffi``): wraps the Rust ``libquicprochat_ffi``
    shared library via CFFI.  This gives you the full Rust crypto stack
    (MLS, hybrid KEM, OPAQUE) at native speed.
 
@@ -11,8 +11,8 @@ Two transport backends are available:
    operations must be supplied externally.
 """
 
-from quicproquo.client import QpqClient
-from quicproquo.types import (
+from quicprochat.client import QpqClient
+from quicprochat.types import (
     ConnectOptions,
     Envelope,
     ChannelResult,