feat: release 2.1.0 with optional Flash final AI review

Default Flash final review to off and persist the setting across the UI,
MCP, SDK and queued tasks. Keep execution separate from test verdicts.

Bundle UI fonts and licenses to remove Google Fonts from startup builds.
Align backend/frontend versions and document installation and upgrades.

artemis/config/agent.py

@@ -735,6 +735,10 @@ class MemoryConfig(BaseModel):
 class FlashProfileConfig(BaseModel):
     """Configuration options specific to the ⚡ Flash execution profile (FlashRunner/ReactiveRunner)."""
 
+    final_check_enabled: bool = Field(
+        default=False,
+        description="Run the independent AI analysis and verdict after Flash execution ends.",
+    )
     max_turns: int = Field(
         default=0,
         ge=0,
@@ -1017,6 +1021,10 @@ class AgentGlobalConfig(BaseModel):
         if out_env is not None:
             data.setdefault("outputter", {})["enabled"] = out_env
 
+        flash_check_env = _parse_bool("ARTEMIS_FLASH_FINAL_CHECK_ENABLED")
+        if flash_check_env is not None:
+            data.setdefault("flash", {})["final_check_enabled"] = flash_check_env
+
         vid_rec_env = _parse_bool("ARTEMIS_VIDEO_RECORDING_ENABLED") or _parse_bool(
             "ARTEMIS_WITH_VIDEO_RECORDING_TOOLS"
         )