Update GEMINI.md and create CLAUDE.md

.bazelrc

@@ -0,0 +1,6 @@
+# Enable Bzlmod for every Bazel command
+common --enable_bzlmod
+
+build --cxxopt=-std=c++17 --host_cxxopt=-std=c++17
+
+test --test_output=errors

.github/workflows/go-update.yml

@@ -0,0 +1,56 @@
+name: CEL Skills Go Update & Test
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches:
+      - main
+      - copybara-sync
+  push:
+    branches:
+      - main
+
+jobs:
+  go-update-and-test:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout PR Branch
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+
+      - name: Set up Go
+        uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32 # v5.0.2
+        with:
+          go-version: '1.25.0'
+
+      - name: Install Protoc & protoc-gen-go
+        run: |
+          sudo apt-get update && sudo apt-get install -y protobuf-compiler
+          go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
+
+      - name: Regenerate Protobuf Go Code
+        run: |
+          protoc --go_out=. --go_opt=paths=source_relative internal/proto/test_schema.proto
+
+      - name: Run go mod tidy
+        run: go mod tidy
+
+      - name: Run go test
+        run: go test ./...
+
+      - name: Commit updated files if changed
+        run: |
+          if ! git diff --quiet go.mod go.sum internal/proto/test_schema.pb.go; then
+            git config user.name "copybara-service[bot]"
+            git config user.email "copybara-service[bot]@users.noreply.github.com"
+            git add go.mod go.sum internal/proto/test_schema.pb.go
+            git commit -m "chore(go): regenerate test_schema.pb.go and tidy go.mod/go.sum"
+            git push
+          else
+            echo "All generated files are up to date."
+          fi

.gitignore

@@ -0,0 +1,4 @@
+bazel-bin/
+bazel-out/
+bazel-skills/
+bazel-testlogs/

CLAUDE.md

@@ -0,0 +1,60 @@
+# Common Expression Language (CEL) Skills
+
+This repository provides tools and skills to author, test, and debug Common
+Expression Language (CEL) expressions.
+
+## Project Structure & Architecture
+
+-   `cmd/mcp`: Entry point for the Model Context Protocol (MCP) server
+    (`cel-expr-mcp`).
+-   `internal/tools`: Internal implementation for environment loading,
+    compilation, evaluation, and prompt generation.
+-   `skills/`: Agent skills directory containing guidelines and workflows:
+    -   `cel-authoring`: Authoring, configuring, and testing expressions and
+        JSON environment definitions.
+    -   `cel-debugging`: Diagnosing and resolving compilation and evaluation
+        errors.
+
+## Build and Test Commands
+
+### Go CLI
+
+-   **Build MCP server**: `go build ./cmd/mcp`
+-   **Run tests**: `go test ./...`
+-   **Run MCP server**: `go run ./cmd/mcp`
+
+### Bazel
+
+-   **Build all targets**: `bazel build //...`
+-   **Run all tests**: `bazel test //...`
+
+## Provided Tools
+
+The `cel-expr-mcp` MCP server provides the following tools for AI agents:
+
+-   `cel_create_environment`: Defines the variables, functions, and types for a
+    CEL expression environment.
+-   `cel_generate_prompt`: Generates an authoring prompt for a CEL expression
+    based on the configuration and requirement.
+-   `cel_compile`: Compiles a CEL expression to validate syntax, correctness,
+    and type checking against an environment definition.
+-   `cel_evaluate`: Evaluates a compiled expression against provided test cases.
+
+### Startup Flags
+
+The server accepts startup flags to tailor the tool experience:
+
+-   `-environment` (alias `-env`): Path to a JSON file or JSON string containing
+    the CEL environment configuration.
+-   `-file_descriptor_set` (alias `-file_descriptors`): Path to a binary
+    `FileDescriptorSet` file containing protobuf definitions referenced as types
+    within an environment.
+
+## Available Skills
+
+To understand how to best use these tools, refer to the skills in `skills/`:
+
+-   `cel-authoring`: Guidelines for creating CEL environment configurations,
+    generating expressions, and compiling.
+-   `cel-debugging`: Diagnostic steps for troubleshooting syntax, type, and
+    evaluation errors.

GEMINI.md

@@ -1,20 +1,27 @@
-# Google Common Expression Language (CEL) Extension
+# Common Expression Language (CEL) Skills
 
-This extension provides the Gemini CLI with tools and skills to author, test,
-and debug CEL expressions.
+This repository provides tools and skills to author and debug CEL expressions.
 
 ## Provided Tools
 
-The `cel` MCP server provides the following tools:
+The `cel-expr-mcp` MCP server provides the following tools:
 
-- `cel_create_environment`: Defines the the variables, functions, types for an
+- `cel_create_environment`: Defines the variables, functions, types for an
    expression.
 - `cel_generate_prompt`: Generates an authoring prompt for an expression based
    on the configuration and requirement.
 - `cel_compile`: Compiles a CEL expression to validate syntax, correctness, and
    type checking against an environment definition.
 - `cel_evaluate`: Evaluates a compiled expression against provided test cases.
 
+The server accepts startup flags to tailor the tool experience:
+
+- `-environment` (alias `-env`): Path to a JSON file or JSON string containing
+   the CEL environment configuration.
+- `-file_descriptor_set` (alias `-file_descriptors`): Path to a binary
+   `FileDescriptorSet` file containing protobuf definitions referenced as types
+   within an environment.
+
 ## Available Skills
 
 To understand how to best use these tools, please refer to the `cel_authoring`

MODULE.bazel

@@ -21,3 +21,9 @@ go_deps.gazelle_default_attributes(
     ],
 )
 go_deps.from_file(go_mod = "//:go.mod")
+use_repo(
+    go_deps,
+    "com_github_google_cel_go",
+    "com_github_modelcontextprotocol_go_sdk",
+    "org_golang_google_protobuf",
+)