feat: Enhance subagent tool output handling and clarify workflow directives

src/app/runtime/actions/mod.rs

@@ -1001,9 +1001,12 @@ fn run_agent_turn(
              to do) and an access tier. You MUST organize the plan into a strict progressive sequence of phases:\n\n\
              1. EXPLORE PHASE (Cycle 0 - MANDATORY):\n\
              - Must only contain read-only drones (access: \"read\").\n\
-             - Directives must focus on codebase investigation, searching patterns, reading configuration/source files, and diagnosing issues.\n\n\
+             - Directives must focus on codebase investigation, searching patterns, reading configuration/source files, and diagnosing issues.\n\
+             - Drones MUST explicitly output a detailed description of the current codebase and their findings for the next cycle to use.\n\n\
              2. PLANNING PHASE (Cycle 1 - MANDATORY):\n\
-             - Must focus on formulating the architectural design, step-by-step implementation plan, and dependency analysis based on Cycle 0 findings. Typically access: \"read\" is preferred here to construct a solid plan document or findings.\n\n\
+             - Must focus on formulating the architectural design, step-by-step implementation plan, and dependency analysis based on Cycle 0 findings.\n\
+             - Drones MUST ONLY output the plan and MUST NOT implement or write any code.\n\
+             - Access: \"read\" is preferred here to construct a solid plan document.\n\n\
              3. EXECUTION PHASE (Cycle 2 and later):\n\
              - Drones can perform modification, compilation, testing, and other modifications (access: \"write\" or \"full\") based on the approved planning from Cycle 1.\n\n\
              Cycles run sequentially. The Hive does not fracture. The Hive executes. Do not explain. Return ONLY raw \
@@ -1026,7 +1029,7 @@ fn run_agent_turn(
              \x20   ]\n\
              \x20 ]\n\
              }}\n\n\
-             Remember: Cycle 0 MUST be investigation-only (access: read). Cycle 1 MUST be planning-only (access: read). Only subsequent cycles can perform modifications (access: write/full)."
+             Remember: Cycle 0 MUST be investigation-only (access: read) and output codebase descriptions. Cycle 1 MUST be planning-only (access: read) without implementation. Only subsequent cycles can perform modifications (access: write/full)."
         ));
 
         let planner_prompt_chars = system_msg.content.as_deref().map_or(0, str::len)