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

playbooks/README.md

@@ -1,22 +1,22 @@
-# quicproquo Playbooks
+# quicprochat Playbooks
 
-YAML-based scripted command sequences for the qpq client.
+YAML-based scripted command sequences for the qpc client.
 
 ## Running a playbook
 
 ```bash
 # Build with playbook support
-cargo build -p quicproquo-client --features playbook
+cargo build -p quicprochat-client --features playbook
 
 # Run a playbook
-cargo run -p quicproquo-client --features playbook -- \
+cargo run -p quicprochat-client --features playbook -- \
   run playbooks/smoke-test.yaml \
   --server 127.0.0.1:7000 \
   --username alice --password hunter2 \
   --danger-accept-invalid-certs
 
 # Override variables
-cargo run -p quicproquo-client --features playbook -- \
+cargo run -p quicprochat-client --features playbook -- \
   run playbooks/smoke-test.yaml \
   -V recipient=charlie -V server=remote.example.com:7000
 ```
@@ -82,7 +82,7 @@ Plus lifecycle commands: `send` (send a chat message), `wait` (pause), `assert`
 ## Programmatic Rust API
 
 ```rust
-use quicproquo_client::{PlaybookRunner, Command, CommandRegistry, CommandResult};
+use quicprochat_client::{PlaybookRunner, Command, CommandRegistry, CommandResult};
 
 // From YAML file
 let mut runner = PlaybookRunner::from_file(Path::new("playbook.yaml"))?;