feat: add Higgsfield AI video generation integration

LoopIOS/AgentHarness/AgentHarness.swift

@@ -131,6 +131,7 @@ final class AgentHarness {
         #if canImport(HealthKit) && os(iOS)
         catalog.append(("Apple Health", "Read-only access to steps, distance, workouts, heart rate, sleep, body mass"))
         #endif
+        catalog.append(("Higgsfield", "Cinematic video generation via Higgsfield Cloud (Sora 2, Veo 3, Kling, etc.)"))
         return catalog
     }()
 
@@ -164,6 +165,7 @@ final class AgentHarness {
         #if canImport(HealthKit) && os(iOS)
         fragments.append(HealthSkill.systemPromptFragment)
         #endif
+        fragments.append(HiggsFieldSkill.systemPromptFragment)
         self.toolsDoc = fragments.joined(separator: "\n\n")
         self.staticToolsDocLength = toolsDoc.count
         self.staticToolSchemasCount = toolSchemas.count

LoopIOS/AgentHarness/SkillDispatcher.swift

@@ -133,6 +133,9 @@ final class SkillDispatcher {
             HealthSkill.shared.handle(functionCall: call, completion: completion); return
         }
         #endif
+        if HiggsFieldSkill.shared.handles(functionName: call.name) {
+            HiggsFieldSkill.shared.handle(functionCall: call, completion: completion); return
+        }
 
         // Runtime-registered skills (Mac-only). Checked under the lock so a
         // concurrent register() can't tear the iteration.

LoopIOS/Info.plist

@@ -37,6 +37,8 @@
 	<string>$(KIMI_API_KEY)</string>
 	<key>CURSOR_API_KEY</key>
 	<string>$(CURSOR_API_KEY)</string>
+	<key>HIGGSFIELD_API_KEY</key>
+	<string>$(HIGGSFIELD_API_KEY)</string>
 	<key>OBSIDIAN_API_KEY</key>
 	<string>$(OBSIDIAN_API_KEY)</string>
 	<key>OBSIDIAN_BASE_URL</key>

LoopIOS/MessagingVC.swift

@@ -1070,6 +1070,7 @@ extension MessagingVC: MessageBoxDelegate {
         #if canImport(HealthKit) && os(iOS)
         if let s = HealthSkill.shared.statusText(for: call) { return s }
         #endif
+        if let s = HiggsFieldSkill.shared.statusText(for: call) { return s }
         if let s = DynamicSkillRegistry.shared.statusText(for: call) { return s }
 
         switch call.name {

LoopIOS/Settings/KeyStore.swift

@@ -43,6 +43,7 @@ final class KeyStore {
         case xAPISecret             = "X_API_SECRET"
         case xAccessToken           = "X_ACCESS_TOKEN"
         case xAccessTokenSecret     = "X_ACCESS_TOKEN_SECRET"
+        case higgsfield             = "HIGGSFIELD_API_KEY"
 
         /// User-facing label shown in Settings.
         var displayName: String {
@@ -67,6 +68,7 @@ final class KeyStore {
             case .xAPISecret:             return "X API Secret"
             case .xAccessToken:           return "X Access Token"
             case .xAccessTokenSecret:     return "X Access Token Secret"
+            case .higgsfield:             return "Higgsfield"
             }
         }
 
@@ -93,6 +95,7 @@ final class KeyStore {
             case .xAPISecret:             return "OAuth 1.0a consumer secret — shown once when you regenerate the API key"
             case .xAccessToken:           return "User-level access token with read+write permission from developer.x.com"
             case .xAccessTokenSecret:     return "User-level access token secret — shown once at generation time"
+            case .higgsfield:             return "KEY_ID:KEY_SECRET credentials from cloud.higgsfield.ai → API Keys. Used for cinematic video generation (Sora, Veo, Kling, etc.)."
             }
         }
     }
@@ -104,7 +107,7 @@ final class KeyStore {
     /// either add a new `Service` case here or extend an existing one's `keys`.
     enum Service: String, CaseIterable {
         case openAI, anthropic, kimi, deepgram, elevenLabs, exa
-        case cursor, devin
+        case cursor, devin, higgsfield
         case github, slack, notion, obsidian
         case twitter
 
@@ -119,6 +122,7 @@ final class KeyStore {
             case .exa:        return "Exa"
             case .cursor:     return "Cursor"
             case .devin:      return "Devin"
+            case .higgsfield: return "Higgsfield"
             case .github:     return "GitHub"
             case .slack:      return "Slack"
             case .notion:     return "Notion"
@@ -141,6 +145,7 @@ final class KeyStore {
             case .exa:        return "Web search + answer skill"
             case .cursor:     return "Dispatch coding tasks to Cursor cloud agents (opens PRs)"
             case .devin:      return "Dispatch coding tasks to Devin cloud agents (opens PRs, live transcript)"
+            case .higgsfield: return "Cinematic video generation via Higgsfield Cloud (Sora 2, Veo 3, Kling, Seedance, etc.)"
             case .github:     return "Review/merge PRs, open PRs and issues, browse repos and notifications"
             case .slack:      return "Read channels/DMs/mentions, search, and send messages with confirmation"
             case .notion:     return "Read and write Notion pages and databases"
@@ -164,6 +169,7 @@ final class KeyStore {
             case .exa:        return [.exa]
             case .cursor:     return [.cursor]
             case .devin:      return [.devin, .devinOrgID]
+            case .higgsfield: return [.higgsfield]
             case .github:     return [.githubPAT, .githubBaseURL]
             case .slack:      return [.slackUserToken]
             case .notion:     return [.notionIntegrationToken]

LoopIOS/Skills/Dynamic/BundledDocSeeds.swift

@@ -111,7 +111,8 @@ skill follows the same shape:
 
 Bundled skills include: Notion, Scheduler, Web search (Exa), URL fetch,
 Self-Improvement, File System, Spec Builder, Location, Image, Obsidian,
-Calendar, Music, Skill Builder, Sub-Agent, and Integrations. The user (or the
+Calendar, Music, Skill Builder, Sub-Agent, Integrations, Cursor, Devin, and
+Higgsfield (cinematic video generation). The user (or the
 agent) can also author new skills in JavaScript at runtime — those hot-load
 from `Workspace/Skills/` and don't require a rebuild.