test: implemented tests for tool call dispatch and tracking

docs/testing/plans/06-tool-evaluation.md

@@ -10,47 +10,73 @@ todo tools, and user interaction tools.
 ## Behaviors to test
 
 ### eval_tool_calls dispatch
-- [ ] Calls dispatched to correct handler by function name prefix
-- [ ] Tool results returned for each call
-- [ ] Multiple concurrent tool calls processed
-- [ ] Tool call tracker updated (chain length, repeats)
-- [ ] Root agent (depth 0) checks escalation queue after eval
-- [ ] Escalation notifications injected into results
+- [ ] Calls dispatched to correct handler by function name prefix (requires RequestContext)
+- [ ] Tool results returned for each call (requires RequestContext)
+- [ ] Multiple concurrent tool calls processed (requires RequestContext)
+- [x] Tool call tracker updated (chain length, repeats)
+- [ ] Root agent (depth 0) checks escalation queue after eval (requires RequestContext)
+- [ ] Escalation notifications injected into results (requires RequestContext)
 
 ### ToolCall::eval routing
-- [ ] agent__* → handle_supervisor_tool
-- [ ] todo__* → handle_todo_tool
-- [ ] user__* → handle_user_tool (depth 0) or escalate (depth > 0)
-- [ ] mcp_invoke_* → invoke_mcp_tool
-- [ ] mcp_search_* → search_mcp_tools
-- [ ] mcp_describe_* → describe_mcp_tool
-- [ ] Other → shell tool execution
+- [ ] agent__* → handle_supervisor_tool (requires RequestContext)
+- [ ] todo__* → handle_todo_tool (requires RequestContext)
+- [ ] user__* → handle_user_tool (depth 0) or escalate (depth > 0) (requires RequestContext)
+- [ ] mcp_invoke_* → invoke_mcp_tool (requires RequestContext + live MCP)
+- [ ] mcp_search_* → search_mcp_tools (requires RequestContext + live MCP)
+- [ ] mcp_describe_* → describe_mcp_tool (requires RequestContext + live MCP)
+- [ ] Other → shell tool execution (requires RequestContext + binary)
 
 ### Shell tool execution
-- [ ] Tool binary found and executed
-- [ ] Arguments passed correctly
-- [ ] Environment variables set (LLM_OUTPUT, etc.)
-- [ ] Tool output returned as result
-- [ ] Tool failure → error returned as tool result (not panic)
+- [ ] Tool binary found and executed (integration test)
+- [ ] Arguments passed correctly (integration test)
+- [ ] Environment variables set (LLM_OUTPUT, etc.) (integration test)
+- [ ] Tool output returned as result (integration test)
+- [ ] Tool failure → error returned as tool result (not panic) (integration test)
 
 ### Tool call tracking
-- [ ] Tracker counts consecutive identical calls
-- [ ] Max repeats triggers warning
-- [ ] Chain length tracked across turns
-- [ ] Tracker state preserved across tool-result loops
+- [x] Tracker counts consecutive identical calls
+- [x] Max repeats triggers warning
+- [x] Chain length tracked across turns
+- [x] Tracker state preserved across tool-result loops
 
 ### Function selection
-- [ ] select_functions filters by role's enabled_tools
-- [ ] select_functions includes MCP meta functions for enabled servers
-- [ ] select_functions includes agent functions when agent active
-- [ ] "all" enables all functions
-- [ ] Comma-separated list enables specific functions
+- [ ] select_functions filters by role's enabled_tools (requires filesystem)
+- [x] select_functions includes MCP meta functions for enabled servers
+- [x] select_functions includes agent functions when agent active (via append tests)
+- [ ] "all" enables all functions (requires filesystem)
+- [ ] Comma-separated list enables specific functions (requires filesystem)
 
 ## Context switching scenarios
-- [ ] Tool calls during agent → agent tools available
-- [ ] Tool calls during role → role tools available
-- [ ] Tool calls with MCP → MCP invoke/search/describe work
-- [ ] No agent → no agent__/todo__ tools in declarations
+- [ ] Tool calls during agent → agent tools available (integration test)
+- [ ] Tool calls during role → role tools available (integration test)
+- [ ] Tool calls with MCP → MCP invoke/search/describe work (integration test)
+- [x] No agent → no agent__/todo__ tools in declarations (via Functions::default)
+
+## Additional behaviors tested (not in original plan)
+
+- [x] ToolCall::new sets name, arguments, id correctly
+- [x] ToolCall::default has empty/null fields
+- [x] ToolCall::with_thought_signature sets and clears
+- [x] ToolCall::dedup keeps last occurrence for duplicate ids
+- [x] ToolCall::dedup keeps all calls without ids
+- [x] ToolCall::dedup empty input returns empty
+- [x] ToolCall::dedup mixed with/without ids
+- [x] ToolCallTracker default values (max_repeats=2, chain_len=3)
+- [x] ToolCallTracker no loop on fresh tracker
+- [x] ToolCallTracker no loop below threshold
+- [x] ToolCallTracker different args breaks loop
+- [x] ToolCallTracker different names breaks loop
+- [x] ToolCallTracker record_call respects capacity
+- [x] ToolCallTracker loop message includes call_history
+- [x] All 6 prefix constants verified
+- [x] Functions::append_todo adds all 5 todo tools
+- [x] Functions::append_supervisor adds spawn/check/collect/list/cancel/reply + task queue
+- [x] Functions::append_teammate adds send_message/check_inbox
+- [x] Functions::append_user_interaction adds ask/confirm/input/checkbox
+- [x] Functions::append_mcp_meta creates 3 per server with correct schemas
+- [x] Functions::append_mcp_meta empty servers → no declarations
+- [x] Functions::find/contains work correctly
+- [x] ToolResult::new stores call and output
 
 ## Old code reference
 - `src/function/mod.rs` — eval_tool_calls, ToolCall::eval