Python scoping rule: any name assigned anywhere in a function body
is local for the entire body. The outbound-files block at ~L442
had `from a2a.types import ... Part ...`, which made `Part` a local
name throughout the execute() function. The astream_events loop at
L358 — which runs BEFORE that import — then raised:
UnboundLocalError: cannot access local variable 'Part' where it
is not associated with a value
Every streaming A2A reply died with "Agent error: cannot access
local variable 'Part' where it is not associated with a value"
instead of the actual agent text. 5 tests caught it:
- test_streaming_plain_string_content
- test_streaming_anthropic_content_blocks
- test_non_stream_events_ignored
- test_core_execute_on_chat_model_end_captures_last_ai_message
- test_core_execute_pii_redaction_when_pii_found
Fix: drop `Part` from the function-scope import (it is already
imported at module level on line 42) and leave a comment pinning
the rationale so a future refactor doesn't re-introduce the shadow.
All 43 test_a2a_executor tests pass locally.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Merge origin/staging into fix/canvas-multilevel-layout-ux. 18 files
auto-merged (mostly canvas/tabs/chat and workspace-server handlers
the earlier DIRTY marker was stale relative to current staging).
- Fix 7 test failures surfaced by the merge:
1. Canvas.pan-to-node.test.tsx — mockGetIntersectingNodes was
inferred as vi.fn(() => never[]); mockReturnValueOnce of a node
object failed type check. Explicit return-type annotation.
2. Canvas.pan-to-node.test.tsx + Canvas.a11y.test.tsx — Canvas.tsx
reads deletingIds.size (new multilevel-layout state). Both mock
stores lacked deletingIds; added new Set<string>() to each.
3. canvas-batch-partial-failure.test.ts — makeWS() built a wire-
format WorkspaceData (snake_case, with x/y/uptime_seconds). The
store's node.data is now WorkspaceNodeData (camelCase, no wire-
only fields). Rewrote makeWS to produce WorkspaceNodeData and
updated 5 call-site casts. No assertions changed.
4. ConfigTab.hermes.test.tsx — two tests pinned pre-#2061 behavior
that the PR intentionally inverts:
a. "shows hermes-specific info banner" — RUNTIMES_WITH_OWN_CONFIG
now contains only {"external"}, so the banner is no longer
shown for hermes. Inverted assertion: now pins ABSENCE of
the banner, with a comment noting the inversion.
b. "config.yaml runtime wins over DB" — priority reversed:
DB is now authoritative so the tier-on-node badge matches
the form. Inverted scenario: DB=hermes + yaml=crewai →
form shows hermes. Switched test's DB runtime off langgraph
because the dropdown collapses langgraph into an empty-
valued "default" option that would hide the win signal.
- No production code changed — this commit is staging merge + test
realignment only. 953/953 canvas tests pass. tsc --noEmit clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Session's accumulated UX work across frontend and platform. Reviewable
in four logical sections — diff is large but internally cohesive
(each section fixes a gap the next one depends on).
## Chat attachments — user ↔ agent file round trip
- New POST /workspaces/:id/chat/uploads (multipart, 50 MB total /
25 MB per file, UUID-prefixed storage under
/workspace/.molecule/chat-uploads/).
- New GET /workspaces/:id/chat/download with RFC 6266 filename
escaping and binary-safe io.CopyN streaming.
- Canvas: drag-and-drop onto chat pane, pending-file pills,
per-message attachment chips with fetch+blob download (anchor
navigation can't carry auth headers).
- A2A flow carries FileParts end-to-end; hermes template executor
now consumes attachments via platform helpers.
## Platform attachment helpers (workspace/executor_helpers.py)
Every runtime's executor routes through the same helpers so future
runtimes inherit attachment awareness for free:
- extract_attached_files — resolve workspace:/file:///bare URIs,
reject traversal, skip non-existent.
- build_user_content_with_files — manifest for non-image files,
multi-modal list (text + image_url) for images. Respects
MOLECULE_DISABLE_IMAGE_INLINING for providers whose vision
adapter hangs on base64 payloads (MiniMax M2.7).
- collect_outbound_files — scans agent reply for /workspace/...
paths, stages each into chat-uploads/ (download endpoint
whitelist), emits as FileParts in the A2A response.
- ensure_workspace_writable — called at molecule-runtime startup
so non-root agents can write /workspace without each template
having to chmod in its Dockerfile.
Hermes template executor + langgraph (a2a_executor.py) + claude-code
(claude_sdk_executor.py) all adopt the helpers.
## Model selection & related platform fixes
- PUT /workspaces/:id/model — was 404'ing, so canvas "Save"
silently lost the model choice. Stores into workspace_secrets
(MODEL_PROVIDER), auto-restarts via RestartByID.
- applyRuntimeModelEnv falls back to envVars["MODEL_PROVIDER"]
so Restart propagates the stored model to HERMES_DEFAULT_MODEL
without needing the caller to rehydrate payload.Model.
- ConfigTab Tier dropdown now reads from workspaces row, not the
(stale) config.yaml — fixes "badge shows T3, form shows T2".
## ChatTab & WebSocket UX fixes
- Send button no longer locks after a dropped TASK_COMPLETE —
`sending` no longer initializes from data.currentTask.
- A2A POST timeout 15 s → 120 s. LLM turns routinely exceed 15 s;
the previous default aborted fetches while the server was still
replying, producing "agent may be unreachable" on success.
- socket.ts: disposed flag + reconnectTimer cancellation + handler
detachment fix zombie-WebSocket in React StrictMode.
- Hermes Config tab: RUNTIMES_WITH_OWN_CONFIG drops 'hermes' —
the adaptor's purpose IS the form, banner was contradictory.
- workspace_provision.go auto-recovery: try <runtime>-default AND
bare <runtime> for template path (hermes lives at the bare name).
## Org deploy/delete animation (theme-ready CSS)
- styles/theme-tokens.css — design tokens (durations, easings,
colors). Light theme overrides by setting only the deltas.
- styles/org-deploy.css — animation classes + keyframes, every
value references a token. prefers-reduced-motion respected.
- Canvas projects node.draggable=false onto locked workspaces
(deploying children AND actively-deleting ids) — RF's
authoritative drag lock; useDragHandlers retains a belt-and-
braces check.
- Organ cancel button (red pulse pill on root during deploy)
cascades via existing DELETE /workspaces/:id?confirm=true.
- Auto fit-view after each arrival, debounced 500 ms so rapid
sibling arrivals coalesce into one fit (previous per-event
fit made the viewport lurch continuously).
- Auto-fit respects user-pan — onMoveEnd stamps a user-pan
timestamp only when event !== null (ignores programmatic
fitView) so auto-fits don't self-cancel.
- deletingIds store slice + useOrgDeployState merge gives the
delete flow the same dim + non-draggable treatment as deploy.
- Platform-level classNames.ts shared by canvas-events +
useCanvasViewport (DRY'd 3 copies of split/filter/join).
## Server payload change
- org_import.go WORKSPACE_PROVISIONING broadcast now includes
parent_id + parent-RELATIVE x/y (slotX/slotY) so the canvas
renders the child at the right parent-nested slot without doing
any absolute-position walk. createWorkspaceTree signature gains
relX, relY alongside absX, absY; both call sites updated.
## Tests
- workspace/tests/test_executor_helpers.py — 11 new cases
covering URI resolution (including traversal rejection),
attached-file extraction (both Part shapes), manifest-only
vs multi-modal content, large-image skip, outbound staging,
dedup, and ensure_workspace_writable (chmod 777 + non-root
tolerance).
- workspace-server chat_files_test.go — upload validation,
Content-Disposition escaping, filename sanitisation.
- workspace-server secrets_test.go — SetModel upsert, empty
clears, invalid UUID rejection.
- tests/e2e/test_chat_attachments_e2e.sh — round-trip against
a live hermes workspace.
- tests/e2e/test_chat_attachments_multiruntime_e2e.sh — static
plumbing check + round-trip across hermes/langgraph/claude-code.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
If asyncio.CancelledError arrived during the heartbeat HTTP push inside
set_current_task() (the increment call), the code raised before entering
the try/finally block in _execute_locked. The finally block never ran,
so active_tasks stayed at 1 forever. Every subsequent heartbeat reported
active_tasks=1, the server saw active_tasks < max_concurrent_tasks as
false (1 < 1), and DrainQueueForWorkspace never fired. Queued A2A
requests were permanently stuck.
Fix: move set_current_task(increment) to be the FIRST statement inside
the try block, not before it. set_current_task's synchronous portion
(heartbeat.active_tasks mutation) still runs unconditionally; only the
optional HTTP push can be cancelled. The finally block now always runs
and always decrements active_tasks back to 0.
Affected executors: claude_sdk_executor, cli_executor, a2a_executor.
hermes_executor is not affected (does not call set_current_task).
Root cause of today's "active_tasks: 1 + queue drain never triggers"
P1 pattern across three workspaces.
All 167 executor tests pass.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
new_agent_text_message returns a real Message object in production but
some test mocks return a plain string. Guard with hasattr + try/except
so the tool_trace assignment doesn't crash test_non_stream_events_ignored.
BLOCKERS fixed:
- instructions.go: Drop team-scope queries (teams/team_members tables don't
exist in any migration). Schema column kept for future. Restored Resolve
to /workspaces/:id/instructions/resolve under wsAuth — closes auth gap
that allowed cross-workspace enumeration of operator policy.
- migration 040: Add CHECK constraints on title (<=200) and content (<=8192)
to prevent token-budget DoS via oversized instructions.
- a2a_executor.py: Pair on_tool_start/on_tool_end via run_id instead of
list-position so parallel tool calls don't drop or clobber outputs. Cap
tool_trace at 200 entries to prevent runaway loops bloating JSONB.
HIGH fixes:
- instructions.go: Add length validation in Create + Update handlers.
Removed dead rows_ shadow variable. Replaced string concatenation in
Resolve with strings.Builder.
- prompt.py: Drop httpx timeout 10s -> 3s (boot hot path). Switch print
to logger.warning. Add Authorization bearer header from
MOLECULE_WORKSPACE_TOKEN env var.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Every A2A response now includes a tool_trace — the list of tools/commands
the agent actually invoked during execution. This enables verifying agent
claims against what they actually did, catches hallucinated "I checked X"
responses, and provides an audit trail for the CEO to control hundreds of
agents by checking the top-level PM's trace.
Changes:
- Python runtime: collect tool name/input/output_preview on every
on_tool_start/on_tool_end event, embed in Message.metadata.tool_trace
- Go platform: extract tool_trace from A2A response metadata, store in
new activity_logs.tool_trace JSONB column with GIN index
- Activity API: expose tool_trace in List and broadcast endpoints
- Migration 039: adds tool_trace column + GIN index
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
