Added skills, shortcuts, and bugifixes++

oAI/Services/AgentSkillFilesService.swift

@@ -0,0 +1,71 @@
+//
+//  AgentSkillFilesService.swift
+//  oAI
+//
+//  Manages per-skill file directories in Application Support/oAI/skills/<uuid>/
+//
+
+import Foundation
+import UniformTypeIdentifiers
+
+final class AgentSkillFilesService {
+    static let shared = AgentSkillFilesService()
+
+    private let baseDirectory: URL = {
+        let appSupport = FileManager.default.urls(for: .applicationSupportDirectory,
+                                                   in: .userDomainMask).first!
+        return appSupport.appendingPathComponent("oAI/skills", isDirectory: true)
+    }()
+
+    func skillDirectory(for id: UUID) -> URL {
+        baseDirectory.appendingPathComponent(id.uuidString, isDirectory: true)
+    }
+
+    func ensureDirectory(for id: UUID) {
+        try? FileManager.default.createDirectory(
+            at: skillDirectory(for: id), withIntermediateDirectories: true)
+    }
+
+    func listFiles(for id: UUID) -> [URL] {
+        guard let contents = try? FileManager.default.contentsOfDirectory(
+            at: skillDirectory(for: id),
+            includingPropertiesForKeys: [.fileSizeKey],
+            options: .skipsHiddenFiles)
+        else { return [] }
+        return contents.sorted { $0.lastPathComponent < $1.lastPathComponent }
+    }
+
+    func addFile(from sourceURL: URL, to id: UUID) throws {
+        ensureDirectory(for: id)
+        let dest = skillDirectory(for: id).appendingPathComponent(sourceURL.lastPathComponent)
+        if FileManager.default.fileExists(atPath: dest.path) {
+            try FileManager.default.removeItem(at: dest)
+        }
+        try FileManager.default.copyItem(at: sourceURL, to: dest)
+    }
+
+    func deleteFile(at url: URL) {
+        try? FileManager.default.removeItem(at: url)
+    }
+
+    func deleteAll(for id: UUID) {
+        try? FileManager.default.removeItem(at: skillDirectory(for: id))
+    }
+
+    func hasFiles(for id: UUID) -> Bool {
+        !listFiles(for: id).isEmpty
+    }
+
+    /// Returns (filename, content) for all readable text files
+    func readTextFiles(for id: UUID) -> [(name: String, content: String)] {
+        listFiles(for: id).compactMap { url in
+            guard let content = try? String(contentsOf: url, encoding: .utf8) else { return nil }
+            return (url.lastPathComponent, content)
+        }
+    }
+
+    /// Returns file size in bytes, or nil if unavailable
+    func fileSize(at url: URL) -> Int? {
+        (try? url.resourceValues(forKeys: [.fileSizeKey]))?.fileSize
+    }
+}