feat(devenv): add containerized development environment (#116)

* feat(devenv): add containerized development environment

Replace local-process dev workflow with a fully containerized stack
using docker compose. This enables consistent development across
machines without requiring local Go/Node toolchains or containerd.

- Add Dockerfile.server.dev with containerd + CNI networking support
- Add Dockerfile.web.dev for frontend dev server
- Add server-dev-entrypoint.sh for containerd lifecycle management
- Expand devenv/docker-compose.yml with server, agent, web, migrate
  and deps services with proper health checks and dependency ordering
- Update app.dev.toml to use container service names instead of localhost
- Refactor mise.toml dev tasks to drive docker compose workflow
- Support agent_gateway.server_addr in config package for inter-container
  communication

* feat(devenv): add hot-reload and registry mirror support

- Add air for Go server hot-reload in dev containers
- Fix agent_gateway host in dev config (0.0.0.0 -> agent)
- Add configurable registry mirror for China mainland users
- Unify MCP image refs via MCPConfig.ImageRef()

* feat(scripts): add China mainland mirror option to install script

Prompt users to opt-in to memoh.cn mirror during installation,
which applies docker-compose.cn.yml overlay and sets registry
in config.toml for MCP image pulls.

mise.toml

@@ -48,18 +48,27 @@ depends = [
 description = "Generate SQL code"
 run = "sqlc generate"
 
-[tasks.infra]
-description = "Start dev infrastructure (postgres + qdrant)"
-run = "docker compose -f devenv/docker-compose.yml up -d"
+[tasks.dev]
+description = "Start development environment"
+run = """
+#!/bin/bash
+set -e
+cp conf/app.dev.toml config.toml
+docker compose -f devenv/docker-compose.yml up --build
+"""
 
-[tasks.infra-down]
-description = "Stop dev infrastructure"
-run = "docker compose -f devenv/docker-compose.yml down"
+[tasks."dev:down"]
+description = "Stop development environment"
+run = "docker compose -f devenv/docker-compose.yml down --remove-orphans"
 
-[tasks.infra-logs]
-description = "View dev infrastructure logs"
+[tasks."dev:logs"]
+description = "View development logs"
 run = "docker compose -f devenv/docker-compose.yml logs -f"
 
+[tasks."dev:restart"]
+description = "Restart a service (usage: mise run dev:restart -- server)"
+run = "docker compose -f devenv/docker-compose.yml restart $@"
+
 [tasks.db-up]
 description = "Initialize and Migrate Database"
 run = "scripts/db-up.sh"
@@ -92,20 +101,10 @@ description = "Install CLI"
 depends = ["//:pnpm-install"]
 run = "cd packages/cli && npm install -g"
 
-[task.install-socktainer]
+[tasks.install-socktainer]
 description = "Install socktainer"
 run = "brew tap socktainer/tap && brew install socktainer"
 
-[tasks.dev]
-description = "Start development environment"
-depends = [
-  "//:swagger-generate",
-  "//:sdk-generate",
-  "//agent:dev",
-  "//cmd/agent:start",
-  "//packages/web:dev",
-]
-
 [tasks.setup]
 description = "Setup development environment"
 depends = [
@@ -117,26 +116,6 @@ depends = [
 run = """
 #!/bin/bash
 set -e
-
-# Auto-copy dev config if config.toml doesn't exist
-if [ ! -f config.toml ]; then
-  cp conf/app.dev.toml config.toml
-  echo '✓ Copied conf/app.dev.toml → config.toml'
-fi
-
-# Start dev infrastructure
-docker compose -f devenv/docker-compose.yml up -d
-
-# Wait for postgres to be healthy
-echo 'Waiting for postgres...'
-until docker compose -f devenv/docker-compose.yml exec -T postgres pg_isready -U memoh >/dev/null 2>&1; do
-  sleep 1
-done
-echo '✓ Postgres ready'
-
-# Run migrations
-scripts/db-up.sh
-
+cp conf/app.dev.toml config.toml
 echo '✓ Setup complete! Run: mise run dev'
 """
-