feat(cli): add takopi config subcommand (#153)

docs/reference/runners/claude/runner.md

@@ -68,17 +68,29 @@ Add a new optional `[claude]` section.
 
 Recommended v1 schema:
 
-```toml
-# ~/.takopi/takopi.toml
+=== "takopi config"
 
-default_engine = "claude"
+    ```sh
+    takopi config set default_engine "claude"
+    takopi config set claude.model "claude-sonnet-4-5-20250929"
+    takopi config set claude.allowed_tools '["Bash", "Read", "Edit", "Write"]'
+    takopi config set claude.dangerously_skip_permissions false
+    takopi config set claude.use_api_billing false
+    ```
 
-[claude]
-model = "claude-sonnet-4-5-20250929" # optional (Claude Code supports model override in settings too)
-allowed_tools = ["Bash", "Read", "Edit", "Write"] # optional but strongly recommended for automation
-dangerously_skip_permissions = false # optional (high risk; prefer sandbox use only)
-use_api_billing = false             # optional (keep ANTHROPIC_API_KEY for API billing)
-```
+=== "toml"
+
+    ```toml
+    # ~/.takopi/takopi.toml
+
+    default_engine = "claude"
+
+    [claude]
+    model = "claude-sonnet-4-5-20250929" # optional (Claude Code supports model override in settings too)
+    allowed_tools = ["Bash", "Read", "Edit", "Write"] # optional but strongly recommended for automation
+    dangerously_skip_permissions = false # optional (high risk; prefer sandbox use only)
+    use_api_billing = false             # optional (keep ANTHROPIC_API_KEY for API billing)
+    ```
 
 Notes:
 

docs/reference/runners/claude/takopi-events.md

@@ -210,15 +210,26 @@ Claude runner implementation summary (no Takopi domain model changes):
 
 A minimal TOML config for Claude:
 
-```toml
-[claude]
-# model: opus | sonnet | haiku
-model = "sonnet"
+=== "takopi config"
 
-allowed_tools = ["Bash", "Read", "Edit", "Write", "WebSearch"]
-dangerously_skip_permissions = false
-use_api_billing = false
-```
+    ```sh
+    takopi config set claude.model "sonnet"
+    takopi config set claude.allowed_tools '["Bash", "Read", "Edit", "Write", "WebSearch"]'
+    takopi config set claude.dangerously_skip_permissions false
+    takopi config set claude.use_api_billing false
+    ```
+
+=== "toml"
+
+    ```toml
+    [claude]
+    # model: opus | sonnet | haiku
+    model = "sonnet"
+
+    allowed_tools = ["Bash", "Read", "Edit", "Write", "WebSearch"]
+    dangerously_skip_permissions = false
+    use_api_billing = false
+    ```
 
 Takopi only maps these keys to Claude CLI flags; other options should be configured in Claude Code settings.
 If `allowed_tools` is omitted, Takopi defaults to `["Bash", "Read", "Edit", "Write"]`.

docs/reference/runners/opencode/runner.md

@@ -13,10 +13,18 @@ npm i -g opencode-ai@latest
 
 Add to your `takopi.toml`:
 
-```toml
-[opencode]
-model = "claude-sonnet"  # optional
-```
+=== "takopi config"
+
+    ```sh
+    takopi config set opencode.model "claude-sonnet"
+    ```
+
+=== "toml"
+
+    ```toml
+    [opencode]
+    model = "claude-sonnet"  # optional
+    ```
 
 ## Usage
 

docs/reference/runners/pi/runner.md

@@ -58,16 +58,27 @@ Add a new optional `[pi]` section.
 
 Recommended schema:
 
-```toml
-# ~/.takopi/takopi.toml
+=== "takopi config"
 
-default_engine = "pi"
+    ```sh
+    takopi config set default_engine "pi"
+    takopi config set pi.model "..."
+    takopi config set pi.provider "..."
+    takopi config set pi.extra_args "[]"
+    ```
 
-[pi]
-model = "..."               # optional; passed as --model
-provider = "..."            # optional; passed as --provider
-extra_args = []             # optional list of strings, appended verbatim
-```
+=== "toml"
+
+    ```toml
+    # ~/.takopi/takopi.toml
+
+    default_engine = "pi"
+
+    [pi]
+    model = "..."               # optional; passed as --model
+    provider = "..."            # optional; passed as --provider
+    extra_args = []             # optional list of strings, appended verbatim
+    ```
 
 Notes:
 

docs/reference/runners/pi/takopi-events.md

@@ -144,11 +144,21 @@ transformation.
 
 A minimal TOML config for Pi:
 
-```toml
-[pi]
-model = "..."
-provider = "..."
-extra_args = []
-```
+=== "takopi config"
+
+    ```sh
+    takopi config set pi.model "..."
+    takopi config set pi.provider "..."
+    takopi config set pi.extra_args "[]"
+    ```
+
+=== "toml"
+
+    ```toml
+    [pi]
+    model = "..."
+    provider = "..."
+    extra_args = []
+    ```
 
 Use `extra_args` for any Pi CLI flags not explicitly mapped.