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

examples/python/README.md

@@ -1,18 +1,18 @@
-# quicproquo Python FFI Client
+# quicprochat Python FFI Client
 
-Python wrapper around `libquicproquo_ffi` using `ctypes`.
+Python wrapper around `libquicprochat_ffi` using `ctypes`.
 
 ## Build the FFI library
 
 ```bash
-cargo build --release -p quicproquo-ffi
+cargo build --release -p quicprochat-ffi
 ```
 
 This produces:
 
-- Linux: `target/release/libquicproquo_ffi.so`
-- macOS: `target/release/libquicproquo_ffi.dylib`
-- Windows: `target/release/quicproquo_ffi.dll`
+- Linux: `target/release/libquicprochat_ffi.so`
+- macOS: `target/release/libquicprochat_ffi.dylib`
+- Windows: `target/release/quicprochat_ffi.dll`
 
 ## Usage
 
@@ -51,7 +51,7 @@ The script auto-detects the library in `target/release/` or `target/debug/`.
 Override with `QPQ_FFI_LIB`:
 
 ```bash
-export QPQ_FFI_LIB=/path/to/libquicproquo_ffi.so
+export QPQ_FFI_LIB=/path/to/libquicprochat_ffi.so
 ```
 
 ## Programmatic usage