ci: Disable Go cache to prevent hanging on Gitea runners

The actions/setup-go@v5 cache feature tries to upload to GitHub's
cache infrastructure, which doesn't exist on self-hosted Gitea
runners. This causes jobs to hang indefinitely during the post step.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+          cache: false
+
+      - name: Build
+        run: go build ./...
+        env:
+          GOPRIVATE: git.marketally.com
+
+      - name: Test
+        run: go test ./...
+        env:
+          GOPRIVATE: git.marketally.com

.gitea/workflows/release.yml

@@ -0,0 +1,29 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+          cache: false
+
+      - name: Build
+        run: go build ./...
+        env:
+          GOPRIVATE: git.marketally.com
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -1,2 +1,80 @@
-# proto-go
+# GitCaddy Actions Proto
 
+Protocol buffer definitions for communication between Gitea Actions runners and the Gitea server.
+
+> **This is a GitCaddy fork** of [code.gitea.io/actions-proto-go](https://gitea.com/gitea/actions-proto-go) with enhanced capability reporting support.
+
+## Overview
+
+This package provides the protobuf-generated Go code for the Gitea Actions runner protocol. It defines the RPC services and message types used for:
+
+- Runner registration and declaration
+- Task fetching and execution
+- Log streaming and status updates
+- **Runner capability reporting** (GitCaddy enhancement)
+
+## Installation
+
+```bash
+go get git.marketally.com/gitcaddy/actions-proto-go
+```
+
+## GitCaddy Enhancements
+
+### Runner Capability Reporting
+
+This fork adds the `CapabilitiesJson` field to the `DeclareRequest` message, enabling runners to report their capabilities to the Gitea server:
+
+```protobuf
+message DeclareRequest {
+  string version = 1;
+  repeated string labels = 2;
+  string capabilities_json = 3;  // NEW: JSON-encoded runner capabilities
+}
+```
+
+The capabilities JSON includes:
+- **OS and Architecture**: Runtime environment details
+- **Docker Support**: Whether Docker/Podman is available
+- **Shell Support**: Available shells (bash, sh, powershell, etc.)
+- **Tool Versions**: Installed tools like Node.js, Go, Python, etc.
+- **Feature Flags**: Cache support, artifact handling, etc.
+- **Limitations**: Known constraints for AI workflow generation
+
+### Why This Matters
+
+AI tools generating CI/CD workflows can query the Gitea API to discover runner capabilities *before* writing workflows, reducing trial-and-error iterations.
+
+## Usage
+
+```go
+import (
+    runnerv1 "git.marketally.com/gitcaddy/actions-proto-go/runner/v1"
+    "git.marketally.com/gitcaddy/actions-proto-go/runner/v1/runnerv1connect"
+)
+
+// Create a client
+client := runnerv1connect.NewRunnerServiceClient(httpClient, serverURL)
+
+// Declare runner with capabilities
+resp, err := client.Declare(ctx, connect.NewRequest(&runnerv1.DeclareRequest{
+    Version:          "0.3.1",
+    Labels:           []string{"ubuntu-latest", "docker"},
+    CapabilitiesJson: `{"os":"linux","arch":"amd64","docker":true}`,
+}))
+```
+
+## Related Projects
+
+| Project | Description |
+|---------|-------------|
+| [gitcaddy/gitea](https://git.marketally.com/gitcaddy/gitea) | GitCaddy Gitea fork with AI-friendly enhancements |
+| [gitcaddy/act_runner](https://git.marketally.com/gitcaddy/act_runner) | Runner with capability detection |
+
+## Upstream
+
+This project is a fork of [code.gitea.io/actions-proto-go](https://gitea.com/gitea/actions-proto-go). We aim to contribute enhancements back to upstream where appropriate.
+
+## License
+
+MIT License - see [LICENSE](LICENSE) for details.

runner/v1/messages.pb.go

@@ -282,8 +282,9 @@ type DeclareRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Version string   `protobuf:"bytes,1,opt,name=version,proto3" json:"version,omitempty"`
+	Version          string   `protobuf:"bytes,1,opt,name=version,proto3" json:"version,omitempty"`
-	Labels  []string `protobuf:"bytes,2,rep,name=labels,proto3" json:"labels,omitempty"`
+	Labels           []string `protobuf:"bytes,2,rep,name=labels,proto3" json:"labels,omitempty"`
+	CapabilitiesJson string   `protobuf:"bytes,3,opt,name=capabilities_json,json=capabilitiesJson,proto3" json:"capabilities_json,omitempty"`
 }
 
 func (x *DeclareRequest) Reset() {
@@ -332,6 +333,13 @@ func (x *DeclareRequest) GetLabels() []string {
 	return nil
 }
 
+func (x *DeclareRequest) GetCapabilitiesJson() string {
+	if x != nil {
+		return x.CapabilitiesJson
+	}
+	return ""
+}
+
 type DeclareResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache