Remove legacy skill prompt cleanup

Delete the empty active-skills prompt extension and its unused prompt template now that selected skills are loaded through chat history instead of protocol. Stop clearing legacy loaded_skills keys from protocol/extras in the loaded-skills hook while keeping history reattachment for compacted skill bodies.

extensions/python/message_loop_prompts_after/AGENTS.md

@@ -2,14 +2,14 @@
 
 ## Purpose
 
-- Own prompt protocol and extras appended around primary message-loop prompt construction.
+- Own prompt protocol, prompt extras, and history reattachment around primary message-loop prompt construction.
 
 ## Ownership
 
-- Ordered Python files own current datetime, skill recall/load context, agent info, parallel job status, and workdir extras injection.
+- Ordered Python files own current datetime, relevant-skill hints, loaded-skill history reattachment, agent info, parallel job status, and workdir extras injection.
 - Explicitly loaded skill bodies belong in tool-result history with metadata so they can survive persistence and be reattached after compaction.
 - Explicitly loaded skill IDs are chat-wide context data, not agent-local state.
-- Legacy active-skill prompt protocol injection must stay empty; selected skills are loaded through history.
+- Skills must not write selected or loaded skill bodies into protocol or extras.
 
 ## Local Contracts
 

extensions/python/message_loop_prompts_after/_65_include_loaded_skills.py

@@ -14,9 +14,6 @@ class IncludeLoadedSkills(Extension):
         if not self.agent:
             return
 
-        loop_data.protocol_persistent.pop("loaded_skills", None)
-        loop_data.extras_persistent.pop("loaded_skills", None)
-
         skill_names = skills.get_loaded_skill_names(self.agent)
         if not skill_names:
             return

plugins/_skills/AGENTS.md

@@ -8,7 +8,6 @@
 
 - `hooks.py` owns skill config normalization.
 - `api/skills_catalog.py` owns skill catalog access and loading selected skills into chat history.
-- `prompts/agent.system.active_skills.md` is retained only for legacy prompt-protocol compatibility.
 - `webui/` owns skill settings UI and store.
 - `default_config.yaml`, `plugin.yaml`, `README.md`, and `LICENSE` own defaults, metadata, docs, and license.
 

plugins/_skills/extensions/python/message_loop_prompts_after/_66_include_active_skills.py

@@ -1,23 +0,0 @@
-from __future__ import annotations
-
-from helpers import skills
-from agent import LoopData
-from helpers.extension import Extension
-
-
-class IncludeActiveSkills(Extension):
-    async def execute(self, loop_data: LoopData = LoopData(), **kwargs):
-        if not self.agent:
-            return
-
-        protocol = loop_data.protocol_persistent
-        protocol.pop("active_skills", None)
-
-        content = skills.build_active_skills_prompt(self.agent)
-        if not content:
-            return
-
-        protocol["active_skills"] = self.agent.read_prompt(
-            "agent.system.active_skills.md",
-            skills=content,
-        )

plugins/_skills/prompts/agent.system.active_skills.md

@@ -1,5 +0,0 @@
-## active skills
-The following skills were explicitly activated for this chat.
-Treat them as already loaded instructions and follow them when relevant.
-
-{{skills}}

tests/test_tool_action_contracts.py

@@ -430,8 +430,8 @@ def test_loaded_skills_extension_reattaches_missing_body_after_compaction(
     module = _load_loaded_skills_extension(monkeypatch, tmp_path)
     agent = _FakeLoadedSkillAgent()
     loop_data = types.SimpleNamespace(
-        protocol_persistent={"loaded_skills": "legacy"},
-        extras_persistent={"loaded_skills": "legacy"},
+        protocol_persistent={},
+        extras_persistent={},
         history_output=[
             {
                 "ai": False,
@@ -442,8 +442,6 @@ def test_loaded_skills_extension_reattaches_missing_body_after_compaction(
 
     asyncio.run(module.IncludeLoadedSkills(agent).execute(loop_data))
 
-    assert "loaded_skills" not in loop_data.protocol_persistent
-    assert "loaded_skills" not in loop_data.extras_persistent
     assert len(agent.added_tool_results) == 1
     added = agent.added_tool_results[0]
     assert added["tool_name"] == "skills_tool"