Initial scaffold: API service, K8s operator, and CRDs

Forgebot is a K8s operator + API service for dispatching AI agent
jobs from git forge commands. Includes:

- CRDs: AgentPool, AgentTask, ProviderQueue, RepositoryBinding
- API server with webhook handler, task queue, and comment proxy
- Operator controllers for task scheduling and job management
- Gitea provider with webhook parsing and signature verification
- PostgreSQL database with auto-migration
- Woodpecker CI pipelines and multi-stage Dockerfiles

pkg/models/command.go

@@ -0,0 +1,39 @@
+package models
+
+import "strings"
+
+var ValidCommands = map[string]bool{
+	"plan":      true,
+	"implement": true,
+	"review":    true,
+	"test":      true,
+	"fix":       true,
+	"retry":     true,
+	"cancel":    true,
+}
+
+type ParsedCommand struct {
+	Name string
+	Args string
+}
+
+func ParseCommands(body string) []ParsedCommand {
+	var commands []ParsedCommand
+	for _, line := range strings.Split(body, "\n") {
+		line = strings.TrimSpace(line)
+		if !strings.HasPrefix(line, "/") {
+			continue
+		}
+		parts := strings.SplitN(line[1:], " ", 2)
+		name := strings.ToLower(parts[0])
+		if !ValidCommands[name] {
+			continue
+		}
+		cmd := ParsedCommand{Name: name}
+		if len(parts) > 1 {
+			cmd.Args = strings.TrimSpace(parts[1])
+		}
+		commands = append(commands, cmd)
+	}
+	return commands
+}