docs(cli): document fmt/lint/check commands and updated exclude defaults

The CLI now includes fmt, lint, and check subcommands for code quality
maintenance, and the default exclude patterns have been expanded from
an empty array to 13 common build/dependency directories.

This update reflects the actual CLI behavior, helping users discover
the new code quality commands and understand the default file filtering
without needing to consult the source code.

Author: lambdalisue

docs/configuration.md

@@ -39,15 +39,21 @@ The first file found is used. JSONC files support `//` and `/* */` comments.
 }
 ```
 
-| Option           | Description                               | Default                         |
-| ---------------- | ----------------------------------------- | ------------------------------- |
-| `includes`       | Glob patterns for scenario file discovery | `["probitas/**/*.probitas.ts"]` |
-| `excludes`       | Glob patterns to exclude from discovery   | `[]`                            |
-| `reporter`       | Output reporter: `list`, `json`           | `"list"`                        |
-| `maxConcurrency` | Maximum parallel scenario execution       | unlimited (`0`)                 |
-| `maxFailures`    | Maximum failures before stopping          | unlimited (`0`)                 |
-| `timeout`        | Default timeout for scenarios             | `"30s"`                         |
-| `selectors`      | Default selectors for filtering scenarios | `[]`                            |
+| Option           | Description                               | Default                               |
+| ---------------- | ----------------------------------------- | ------------------------------------- |
+| `includes`       | Glob patterns for scenario file discovery | `["probitas/**/*.probitas.ts"]`       |
+| `excludes`       | Glob patterns to exclude from discovery   | Common build/dependency directories\* |
+| `reporter`       | Output reporter: `list`, `json`           | `"list"`                              |
+| `maxConcurrency` | Maximum parallel scenario execution       | unlimited (`0`)                       |
+| `maxFailures`    | Maximum failures before stopping          | unlimited (`0`)                       |
+| `timeout`        | Default timeout for scenarios             | `"30s"`                               |
+| `selectors`      | Default selectors for filtering scenarios | `[]`                                  |
+
+\*Default exclude patterns:
+
+- `**/node_modules/**`, `**/target/**`, `**/.venv/**`, `**/venv/**`,
+  `**/__pycache__/**`, `**/vendor/**`, `**/build/**`, `**/bin/**`, `**/obj/**`,
+  `**/.git/**`, `**/dist/**`, `**/coverage/**`
 
 ### maxFailures
 

docs/overview.md

@@ -101,6 +101,65 @@ probitas run -s tag:example
 probitas run --reporter json
 ```
 
+## Code Quality Commands
+
+Probitas provides commands to maintain code quality in your scenario files:
+
+```bash
+# Format scenario files
+probitas fmt
+
+# Lint scenario files
+probitas lint
+
+# Type-check scenario files
+probitas check
+```
+
+These commands run Deno's built-in tools on discovered scenario files. They use
+the same file discovery mechanism as `probitas run`, respecting your `includes`
+and `excludes` configuration.
+
+### fmt
+
+Formats scenario files using `deno fmt`:
+
+```bash
+probitas fmt                    # Format all discovered scenarios
+probitas fmt probitas/auth/     # Format specific directory
+```
+
+### lint
+
+Lints scenario files using `deno lint`. Automatically excludes rules that
+conflict with scenario imports (`no-import-prefix`, `no-unversioned-import`):
+
+```bash
+probitas lint                   # Lint all discovered scenarios
+probitas lint probitas/auth/    # Lint specific directory
+```
+
+### check
+
+Type-checks scenario files using `deno check`:
+
+```bash
+probitas check                  # Type-check all discovered scenarios
+probitas check probitas/auth/   # Type-check specific directory
+```
+
+### Common Options
+
+All code quality commands support these options:
+
+```bash
+--include <pattern>   # Include pattern for file discovery (repeatable)
+--exclude <pattern>   # Exclude pattern for file discovery (repeatable)
+--config <path>       # Path to probitas config file
+-v, --verbose         # Verbose output
+-q, --quiet           # Suppress output
+```
+
 ### Tag-Based Filtering
 
 Organize scenarios with tags for easy filtering: