feat: add skill filter + group system prompt plumbing

src/auto-reply/reply.ts

@@ -593,6 +593,10 @@ export async function getReplyFromConfig(
         silentToken: SILENT_REPLY_TOKEN,
       })
     : "";
+  const groupSystemPrompt = sessionCtx.GroupSystemPrompt?.trim() ?? "";
+  const extraSystemPrompt = [groupIntro, groupSystemPrompt]
+    .filter(Boolean)
+    .join("\n\n");
   const baseBody = sessionCtx.BodyStripped ?? sessionCtx.Body ?? "";
   const rawBodyTrimmed = (ctx.Body ?? "").trim();
   const baseBodyTrimmedRaw = baseBody.trim();
@@ -651,6 +655,7 @@ export async function getReplyFromConfig(
     isFirstTurnInSession,
     workspaceDir,
     cfg,
+    skillFilter: opts?.skillFilter,
   });
   sessionEntry = skillResult.sessionEntry ?? sessionEntry;
   systemSent = skillResult.systemSent;
@@ -759,7 +764,7 @@ export async function getReplyFromConfig(
       blockReplyBreak: resolvedBlockStreamingBreak,
       ownerNumbers:
         command.ownerList.length > 0 ? command.ownerList : undefined,
-      extraSystemPrompt: groupIntro || undefined,
+      extraSystemPrompt: extraSystemPrompt || undefined,
       ...(provider === "ollama" ? { enforceFinalTag: true } : {}),
     },
   };

src/auto-reply/reply/session-updates.ts

@@ -49,6 +49,8 @@ export async function ensureSkillSnapshot(params: {
   isFirstTurnInSession: boolean;
   workspaceDir: string;
   cfg: ClawdbotConfig;
+  /** If provided, only load skills with these names (for per-channel skill filtering) */
+  skillFilter?: string[];
 }): Promise<{
   sessionEntry?: SessionEntry;
   skillsSnapshot?: SessionEntry["skillsSnapshot"];
@@ -63,6 +65,7 @@ export async function ensureSkillSnapshot(params: {
     isFirstTurnInSession,
     workspaceDir,
     cfg,
+    skillFilter,
   } = params;
 
   let nextEntry = sessionEntry;
@@ -76,7 +79,10 @@ export async function ensureSkillSnapshot(params: {
       };
     const skillSnapshot =
       isFirstTurnInSession || !current.skillsSnapshot
-        ? buildWorkspaceSkillSnapshot(workspaceDir, { config: cfg })
+        ? buildWorkspaceSkillSnapshot(workspaceDir, {
+            config: cfg,
+            skillFilter,
+          })
         : current.skillsSnapshot;
     nextEntry = {
       ...current,
@@ -96,7 +102,10 @@ export async function ensureSkillSnapshot(params: {
     nextEntry?.skillsSnapshot ??
     (isFirstTurnInSession
       ? undefined
-      : buildWorkspaceSkillSnapshot(workspaceDir, { config: cfg }));
+      : buildWorkspaceSkillSnapshot(workspaceDir, {
+          config: cfg,
+          skillFilter,
+        }));
   if (
     skillsSnapshot &&
     sessionStore &&

src/auto-reply/templating.ts

@@ -31,6 +31,7 @@ export type MsgContext = {
   GroupRoom?: string;
   GroupSpace?: string;
   GroupMembers?: string;
+  GroupSystemPrompt?: string;
   SenderName?: string;
   SenderId?: string;
   SenderUsername?: string;

src/auto-reply/types.ts

@@ -9,6 +9,8 @@ export type GetReplyOptions = {
   onBlockReply?: (payload: ReplyPayload) => Promise<void> | void;
   onToolResult?: (payload: ReplyPayload) => Promise<void> | void;
   disableBlockStreaming?: boolean;
+  /** If provided, only load these skills for this session (empty = no skills). */
+  skillFilter?: string[];
 };
 
 export type ReplyPayload = {