docs: rename config file from trc.yaml to trbconfig.yml

Unify configuration filename across all documentation:
- English docs (8 files)
- Japanese docs (8 files)
- Korean docs (8 files)

This aligns with the t-ruby core change in commit 941e6d1.

Author: yhk1038

docs/cli/commands.md

@@ -191,7 +191,7 @@ trc watch --debounce 500
 **Watch configuration files too:**
 
 ```bash
-trc watch src/ --include "trc.yaml"
+trc watch src/ --include "trbconfig.yml"
 ```
 
 ### Output
@@ -372,7 +372,7 @@ Initialize a new T-Ruby project with configuration file and directory structure.
 ### Basic Usage
 
 ```bash
-# Create trc.yaml in current directory
+# Create trbconfig.yml in current directory
 trc init
 
 # Interactive setup
@@ -411,7 +411,7 @@ trc init --template basic
 
 Creates:
 ```
-trc.yaml
+trbconfig.yml
 src/
 build/
 sig/
@@ -529,7 +529,7 @@ T-Ruby Project Setup
 ? Create directory structure? Yes
 ? Initialize git repository? Yes
 
-✓ Created trc.yaml
+✓ Created trbconfig.yml
 ✓ Created src/
 ✓ Created build/
 ✓ Created sig/
@@ -583,7 +583,7 @@ trc -h
 trc compile --help
 
 # Use specific config file
-trc --config path/to/trc.yaml
+trc --config path/to/trbconfig.yml
 
 # Set log level (debug, info, warn, error)
 trc --log-level debug
@@ -600,11 +600,11 @@ trc --stack-trace
 
 ## Configuration File
 
-Commands respect the `trc.yaml` configuration file. Command-line options override config file settings.
+Commands respect the `trbconfig.yml` configuration file. Command-line options override config file settings.
 
 Example workflow:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 source:
   include:
     - src
@@ -623,7 +623,7 @@ compiler:
 Then simply run:
 
 ```bash
-# Uses settings from trc.yaml
+# Uses settings from trbconfig.yml
 trc compile
 trc watch
 trc check
@@ -733,14 +733,14 @@ trc compile . --log-level debug
 **Unexpected output location:**
 ```bash
 # Check your configuration
-cat trc.yaml
+cat trbconfig.yml
 
 # Or specify explicitly
 trc compile src/ --output build/ --rbs-dir sig/
 ```
 
 ## Next Steps
 
-- [Configuration Reference](/docs/cli/configuration) - Learn about `trc.yaml` options
+- [Configuration Reference](/docs/cli/configuration) - Learn about `trbconfig.yml` options
 - [Compiler Options](/docs/cli/compiler-options) - Detailed compiler flags and settings
 - [Project Configuration](/docs/getting-started/project-configuration) - Set up your project

docs/cli/compiler-options.md

@@ -16,7 +16,7 @@ T-Ruby's compiler provides extensive options to control compilation, type checki
 Compiler options can be specified in three ways:
 
 1. **Command-line flags**: `trc --strict compile src/`
-2. **Configuration file**: In `trc.yaml` under `compiler:` section
+2. **Configuration file**: In `trbconfig.yml` under `compiler:` section
 3. **Environment variables**: `TRC_STRICT=true trc compile src/`
 
 Command-line flags override configuration file settings.
@@ -1033,14 +1033,14 @@ Variables override config file but are overridden by command-line flags.
 Options are resolved in this order (later overrides earlier):
 
 1. Default values
-2. Configuration file (`trc.yaml`)
+2. Configuration file (`trbconfig.yml`)
 3. Environment variables
 4. Command-line flags
 
 Example:
 
 ```yaml
-# trc.yaml
+# trbconfig.yml
 compiler:
   strictness: standard
 ```
@@ -1099,5 +1099,5 @@ trc compile --strict src/
 ## Next Steps
 
 - [Commands Reference](/docs/cli/commands) - Learn about all CLI commands
-- [Configuration File](/docs/cli/configuration) - Configure via `trc.yaml`
+- [Configuration File](/docs/cli/configuration) - Configure via `trbconfig.yml`
 - [Type Annotations](/docs/learn/basics/type-annotations) - Start writing typed code

docs/cli/configuration.md

@@ -9,13 +9,13 @@ description: T-Ruby configuration file reference
 
 # Configuration
 
-T-Ruby uses a `trc.yaml` file to configure compiler behavior, source files, output locations, and type checking rules. This reference covers all available configuration options.
+T-Ruby uses a `trbconfig.yml` file to configure compiler behavior, source files, output locations, and type checking rules. This reference covers all available configuration options.
 
 ## Configuration File
 
-Place `trc.yaml` in your project root:
+Place `trbconfig.yml` in your project root:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 # T-Ruby configuration file
 version: ">=1.0.0"
 
@@ -688,7 +688,7 @@ types:
   stdlib: true
 ```
 
-**trc.yaml:**
+**trbconfig.yml:**
 ```yaml
 extends: trc.base.yaml
 
@@ -726,9 +726,9 @@ workspace:
         strictness: standard
 ```
 
-Each package has its own `trc.yaml`:
+Each package has its own `trbconfig.yml`:
 
-**packages/core/trc.yaml:**
+**packages/core/trbconfig.yml:**
 ```yaml
 source:
   include:
@@ -749,7 +749,7 @@ trc --workspace compile
 
 A comprehensive configuration for a Rails application:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 # T-Ruby Configuration for Rails App
 version: ">=1.2.0"
 
@@ -876,7 +876,7 @@ Output:
 
 ```
 Configuration loaded from:
-  - /path/to/trc.yaml
+  - /path/to/trbconfig.yml
   - Environment variables:
     - TRC_STRICTNESS=standard
   - Command line:
@@ -953,7 +953,7 @@ compiler:
 ### 3. Use environment-specific configs
 
 ```yaml
-# trc.yaml (default - development)
+# trbconfig.yml (default - development)
 compiler:
   strictness: standard
 
@@ -981,7 +981,7 @@ compiler:
 ### 5. Keep configuration in version control
 
 ```bash
-git add trc.yaml
+git add trbconfig.yml
 git commit -m "Add T-Ruby configuration"
 ```
 

docs/getting-started/editor-setup.md

@@ -88,7 +88,7 @@ Add to your Neovim configuration:
 require('lspconfig').t_ruby_lsp.setup {
   cmd = { "t-ruby-lsp" },
   filetypes = { "truby" },
-  root_dir = require('lspconfig').util.root_pattern("trc.yaml", ".git"),
+  root_dir = require('lspconfig').util.root_pattern("trbconfig.yml", ".git"),
   settings = {
     truby = {
       typeCheck = {

docs/getting-started/project-configuration.md

@@ -13,9 +13,9 @@ For larger projects, T-Ruby uses a configuration file to manage compiler options
 
 ## Configuration File
 
-Create a `trc.yaml` file in your project root:
+Create a `trbconfig.yml` file in your project root:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 # T-Ruby Configuration
 
 # Compiler version requirement
@@ -59,7 +59,7 @@ Use `trc init` to create a configuration file:
 trc init
 ```
 
-This creates a `trc.yaml` with sensible defaults.
+This creates a `trbconfig.yml` with sensible defaults.
 
 For interactive setup:
 
@@ -184,7 +184,7 @@ A typical T-Ruby project structure:
 
 ```
 my-project/
-├── trc.yaml              # Configuration
+├── trbconfig.yml              # Configuration
 ├── src/                  # T-Ruby source files
 │   ├── models/
 │   │   ├── user.trb
@@ -212,7 +212,7 @@ my-project/
 
 Use environment variables or multiple config files:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 # Base configuration
 
 compiler:
@@ -252,7 +252,7 @@ Create a Rake task:
 require "t-ruby/rake_task"
 
 TRuby::RakeTask.new(:compile) do |t|
-  t.config_file = "trc.yaml"
+  t.config_file = "trbconfig.yml"
 end
 
 # Compile before running tests
@@ -270,7 +270,7 @@ bundle exec rake test
 
 For Rails projects, configure T-Ruby to work with the Rails structure:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 source:
   include:
     - app/models
@@ -348,13 +348,13 @@ For monorepos with multiple packages:
 monorepo/
 ├── packages/
 │   ├── core/
-│   │   ├── trc.yaml
+│   │   ├── trbconfig.yml
 │   │   └── src/
 │   ├── web/
-│   │   ├── trc.yaml
+│   │   ├── trbconfig.yml
 │   │   └── src/
 │   └── api/
-│       ├── trc.yaml
+│       ├── trbconfig.yml
 │       └── src/
 └── trc.workspace.yaml
 ```

docs/tooling/migrating-from-ruby.md

@@ -609,7 +609,7 @@ end
 
 Start with permissive mode during migration:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 compiler:
   strictness: permissive
 
@@ -628,7 +628,7 @@ This allows:
 
 As you add more types, increase strictness:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 compiler:
   strictness: standard  # Move from permissive
 
@@ -642,7 +642,7 @@ compiler:
 
 Once fully migrated:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 compiler:
   strictness: strict
 
@@ -672,7 +672,7 @@ app/
 
 Configure T-Ruby to only compile `.trb` files:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 source:
   include:
     - app/models
@@ -739,7 +739,7 @@ bundle exec rake test
 
 ### Phase 1: Setup
 - [ ] Install T-Ruby
-- [ ] Create `trc.yaml` configuration
+- [ ] Create `trbconfig.yml` configuration
 - [ ] Set up watch mode
 - [ ] Configure CI for type checking
 

docs/tooling/rbs-integration.md

@@ -90,7 +90,7 @@ end
 
 By default, RBS files are generated. You can control this:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 compiler:
   generate_rbs: true  # Default
 ```
@@ -109,7 +109,7 @@ trc compile --rbs-only src/
 
 Configure where RBS files are written:
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 output:
   rbs_dir: sig  # Default
 ```
@@ -403,7 +403,7 @@ sig/
     └── external.rbs
 ```
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 output:
   rbs_dir: sig/generated
 
@@ -555,7 +555,7 @@ class User < ApplicationRecord
 end
 ```
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 source:
   include:
     - app/models

docs/tooling/steep.md

@@ -750,7 +750,7 @@ target :test do
 end
 ```
 
-```yaml title="trc.yaml"
+```yaml title="trbconfig.yml"
 source:
   include:
     - src/app