docs(readme): document git and timeout configuration options

Add documentation for:
- OPENCODER_AUTO_COMMIT environment variable
- OPENCODER_AUTO_PUSH environment variable
- OPENCODER_COMMIT_SIGNOFF environment variable
- OPENCODER_CYCLE_TIMEOUT_MINUTES environment variable

Also update config.json example to show all available options including
autoCommit, autoPush, commitSignoff, and cycleTimeoutMinutes.

This helps users understand how to configure git behavior and cycle
timeouts through environment variables or config file.

Signed-off-by: leocavalcante <leo@cavalcante.dev>

Author: leocavalcante

README.md

@@ -181,7 +181,11 @@ Create a `.opencode/opencoder/config.json` in your project:
   "buildModel": "anthropic/claude-sonnet-4",
   "verbose": false,
   "maxRetries": 3,
-  "taskPauseSeconds": 2
+  "taskPauseSeconds": 2,
+  "autoCommit": true,
+  "autoPush": true,
+  "commitSignoff": false,
+  "cycleTimeoutMinutes": 60
 }
 ```
 
@@ -197,6 +201,10 @@ Create a `.opencode/opencoder/config.json` in your project:
 | `OPENCODER_BACKOFF_BASE` | `10` | Base seconds for exponential backoff |
 | `OPENCODER_LOG_RETENTION` | `30` | Days to keep old logs |
 | `OPENCODER_TASK_PAUSE_SECONDS` | `2` | Pause between tasks |
+| `OPENCODER_AUTO_COMMIT` | `true` | Auto-commit changes after tasks |
+| `OPENCODER_AUTO_PUSH` | `true` | Auto-push commits after cycles |
+| `OPENCODER_COMMIT_SIGNOFF` | `false` | Add Signed-off-by to commits (DCO) |
+| `OPENCODER_CYCLE_TIMEOUT_MINUTES` | `60` | Max minutes per cycle (0 = no limit) |
 
 ### Config Priority
 

biome.json

@@ -1,28 +1,28 @@
 {
-  "$schema": "https://biomejs.dev/schemas/2.3.11/schema.json",
-  "linter": {
-    "enabled": true,
-    "rules": {
-      "recommended": true,
-      "correctness": {
-        "noUnusedImports": "warn",
-        "noUnusedVariables": "warn"
-      }
-    }
-  },
-  "formatter": {
-    "enabled": true,
-    "indentStyle": "tab",
-    "indentWidth": 2,
-    "lineWidth": 100
-  },
-  "javascript": {
-    "formatter": {
-      "quoteStyle": "double",
-      "semicolons": "asNeeded"
-    }
-  },
-  "files": {
-    "includes": ["src/**/*.ts", "tests/**/*.ts"]
-  }
+	"$schema": "https://biomejs.dev/schemas/2.3.11/schema.json",
+	"linter": {
+		"enabled": true,
+		"rules": {
+			"recommended": true,
+			"correctness": {
+				"noUnusedImports": "warn",
+				"noUnusedVariables": "warn"
+			}
+		}
+	},
+	"formatter": {
+		"enabled": true,
+		"indentStyle": "tab",
+		"indentWidth": 2,
+		"lineWidth": 100
+	},
+	"javascript": {
+		"formatter": {
+			"quoteStyle": "double",
+			"semicolons": "asNeeded"
+		}
+	},
+	"files": {
+		"includes": ["src/**/*.ts", "tests/**/*.ts"]
+	}
 }