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/go/cmd/example/main.go

@@ -1,4 +1,4 @@
-// Command example demonstrates basic usage of the quicproquo Go SDK.
+// Command example demonstrates basic usage of the quicprochat Go SDK.
 package main
 
 import (
@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"os"
 
-	"quicproquo.dev/sdk/go/qpq"
+	"quicprochat.dev/sdk/go/qpq"
 )
 
 func main() {