refactor(opencode-skill-loader): split loader and merger into focused modules

Extract skill loading pipeline into single-responsibility modules:
- skill-discovery.ts, skill-directory-loader.ts, skill-deduplication.ts
- loaded-skill-from-path.ts, loaded-skill-template-extractor.ts
- skill-template-resolver.ts, skill-definition-record.ts
- git-master-template-injection.ts, allowed-tools-parser.ts
- skill-mcp-config.ts, skill-resolution-options.ts
- merger/ directory for skill merging logic

src/features/opencode-skill-loader/git-master-template-injection.ts

@@ -0,0 +1,81 @@
+import type { GitMasterConfig } from "../../config/schema"
+
+export function injectGitMasterConfig(template: string, config?: GitMasterConfig): string {
+	const commitFooter = config?.commit_footer ?? true
+	const includeCoAuthoredBy = config?.include_co_authored_by ?? true
+
+	if (!commitFooter && !includeCoAuthoredBy) {
+		return template
+	}
+
+	const sections: string[] = []
+
+	sections.push("### 5.5 Commit Footer & Co-Author")
+	sections.push("")
+	sections.push("Add Sisyphus attribution to EVERY commit:")
+	sections.push("")
+
+	if (commitFooter) {
+		const footerText =
+			typeof commitFooter === "string"
+				? commitFooter
+				: "Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)"
+		sections.push("1. **Footer in commit body:**")
+		sections.push("```")
+		sections.push(footerText)
+		sections.push("```")
+		sections.push("")
+	}
+
+	if (includeCoAuthoredBy) {
+		sections.push(`${commitFooter ? "2" : "1"}. **Co-authored-by trailer:**`)
+		sections.push("```")
+		sections.push("Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>")
+		sections.push("```")
+		sections.push("")
+	}
+
+	if (commitFooter && includeCoAuthoredBy) {
+		const footerText =
+			typeof commitFooter === "string"
+				? commitFooter
+				: "Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)"
+		sections.push("**Example (both enabled):**")
+		sections.push("```bash")
+		sections.push(
+			`git commit -m "{Commit Message}" -m "${footerText}" -m "Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>"`
+		)
+		sections.push("```")
+	} else if (commitFooter) {
+		const footerText =
+			typeof commitFooter === "string"
+				? commitFooter
+				: "Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)"
+		sections.push("**Example:**")
+		sections.push("```bash")
+		sections.push(`git commit -m "{Commit Message}" -m "${footerText}"`)
+		sections.push("```")
+	} else if (includeCoAuthoredBy) {
+		sections.push("**Example:**")
+		sections.push("```bash")
+		sections.push(
+			"git commit -m \"{Commit Message}\" -m \"Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>\""
+		)
+		sections.push("```")
+	}
+
+	const injection = sections.join("\n")
+
+	const insertionPoint = template.indexOf("```\n</execution>")
+	if (insertionPoint !== -1) {
+		return (
+			template.slice(0, insertionPoint) +
+			"```\n\n" +
+			injection +
+			"\n</execution>" +
+			template.slice(insertionPoint + "```\n</execution>".length)
+		)
+	}
+
+	return template + "\n\n" + injection
+}