feat(core): add skill registry and file agent loading (#30617)

packages/opencode/src/config/markdown.ts

@@ -1,6 +1,6 @@
-import matter from "gray-matter"
 import { Filesystem } from "@/util/filesystem"
 import { FrontmatterError } from "@opencode-ai/core/v1/config/error"
+import { ConfigMarkdown as ConfigMarkdownCore } from "@opencode-ai/core/config/markdown"
 
 export const FILE_REGEX = /(?<![\w`])@(\.?[^\s`,.]*(?:\.[^\s`,.]+)*)/g
 export const SHELL_REGEX = /!`([^`]+)`/g
@@ -15,75 +15,21 @@ export function shell(template: string) {
 
 // other coding agents like claude code allow invalid yaml in their
 // frontmatter, we need to fallback to a more permissive parser for those cases
-export function fallbackSanitization(content: string): string {
-  const match = content.match(/^---\r?\n([\s\S]*?)\r?\n---/)
-  if (!match) return content
-
-  const frontmatter = match[1]
-  const lines = frontmatter.split(/\r?\n/)
-  const result: string[] = []
-
-  for (const line of lines) {
-    // skip comments and empty lines
-    if (line.trim().startsWith("#") || line.trim() === "") {
-      result.push(line)
-      continue
-    }
-
-    // skip lines that are continuations (indented)
-    if (line.match(/^\s+/)) {
-      result.push(line)
-      continue
-    }
-
-    // match key: value pattern
-    const kvMatch = line.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*:\s*(.*)$/)
-    if (!kvMatch) {
-      result.push(line)
-      continue
-    }
-
-    const key = kvMatch[1]
-    const value = kvMatch[2].trim()
-
-    // skip if value is empty, already quoted, or uses block scalar
-    if (value === "" || value === ">" || value === "|" || value.startsWith('"') || value.startsWith("'")) {
-      result.push(line)
-      continue
-    }
-
-    // if value contains a colon, convert to block scalar
-    if (value.includes(":")) {
-      result.push(`${key}: |-`)
-      result.push(`  ${value}`)
-      continue
-    }
-
-    result.push(line)
-  }
-
-  const processed = result.join("\n")
-  return content.replace(frontmatter, () => processed)
-}
+export const fallbackSanitization = ConfigMarkdownCore.sanitize
 
 export async function parse(filePath: string) {
   const template = await Filesystem.readText(filePath)
 
   try {
-    const md = matter(template)
-    return md
-  } catch {
-    try {
-      return matter(fallbackSanitization(template))
-    } catch (err) {
-      throw new FrontmatterError(
-        {
-          path: filePath,
-          message: `${filePath}: Failed to parse YAML frontmatter: ${err instanceof Error ? err.message : String(err)}`,
-        },
-        { cause: err },
-      )
-    }
+    return ConfigMarkdownCore.parse(template)
+  } catch (err) {
+    throw new FrontmatterError(
+      {
+        path: filePath,
+        message: `${filePath}: Failed to parse YAML frontmatter: ${err instanceof Error ? err.message : String(err)}`,
+      },
+      { cause: err },
+    )
   }
 }