feat: improve task execution, verification and packaging

Add execution incidents, action bursts and shared Flash history.

Expose verification and Explorer settings with streamed check results.

Support graceful cancellation, recording recovery and bundled UI resources.

Add CI quality checks and clean up comments and documentation.

artemis/mcp/action_manifest.py

@@ -23,8 +23,10 @@ Two rules govern the split between required and optional:
 
 1. A tool is REQUIRED only when a prompt depends on it *structurally*, i.e. the prompt
    cannot be assembled around its absence. Today that is ``click_sequence`` alone: the
-   two ``*_disappeared_analyzer.md`` prompts are built around "atomic chained execution
-   to defeat turn latency", which *is* ``click_sequence``.
+   Flash runner prompt's "Time-Sensitive Tasks" teaching is built around "atomic
+   chained execution to defeat turn latency", which *is* ``click_sequence``. (The Pro
+   Operator needs no such tool: a multi-action turn is executed by the Validator as an
+   unvetted fast-action burst.)
 2. Everything else is OPTIONAL, because every other prompt reference lives in a tool
    enumeration slot or a self-contained instruction block that the assembly layer
    (``artemis/agents/prompt_assembly.py``) renders conditionally. An optional tool that
@@ -124,7 +126,6 @@ BACKEND_INDEPENDENT_TOOLS: frozenset[str] = frozenset(
         "analyze_task_output",
         "recall_history",
         "report_task_status",
-        "report_failure_analysis",
     }
 )
 
@@ -139,7 +140,6 @@ AGENT_ROLES: frozenset[str] = frozenset(
     {
         "operator",
         "flash",
-        "failure_analyzer",
         "validator",
     }
 )