Previously Phase 3 only checked the workspace-server's poll-mode short-circuit
emit shape ({"status":"queued","delivery_mode":"poll","method":"..."}); the
matching client-side classification was tested in isolation against fixture
dicts in test_a2a_response.py.
This phase closes the loop by piping the actual on-the-wire response from a
real workspace-server back through the wheel's a2a_response.parse() and
asserting it classifies as the Queued variant with the right method +
delivery_mode. A regression in EITHER the server emit shape OR the client
parser will now fail this E2E, eliminating the gap that allowed the original
"unexpected response shape" production bug to ship despite green unit tests.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Introduce ``workspace/a2a_response.py`` as the single source of truth for
the wire shapes the workspace-server proxy can return at
``/workspaces/<id>/a2a``:
* ``Result`` — JSON-RPC success
* ``Error`` — JSON-RPC error or platform-level error (with
restart-in-progress metadata when present)
* ``Queued`` — poll-mode short-circuit envelope: the platform
queued the message into the target's inbox, the
target will fetch via /activity poll
* ``Malformed`` — anything the parser can't classify (logged at
WARNING so a future server change is loud)
``send_a2a_message`` (in ``a2a_client.py``) now dispatches via
``a2a_response.parse(data)`` instead of inline ``"result" in data`` /
``"error" in data`` sniffing. The Queued variant returns a new
``_A2A_QUEUED_PREFIX`` sentinel so callers can distinguish "delivered
async, no synchronous reply" from both success-with-text and failure.
reno-stars production data caught two intermittent failures that
both reduced to the same root cause:
1. **File transfer announce silently failed** — when CEO Ryan PC
(poll-mode external molecule-mcp) sent the harmi.zip
announcement to Reno Stars Business Intelligent (also poll-mode
external), ``send_a2a_message`` saw the platform's poll-queued
envelope ``{"status":"queued","delivery_mode":"poll","method":"..."}``,
didn't recognize it as the synthetic delivery-acknowledgement
it is, and returned ``[A2A_ERROR] unexpected response shape``.
The agent fell back to a chunk-shipping path; receiver did get
the file but operator-facing logs showed a failure that didn't
actually fail.
2. **Duplicated agent comm** — same bug, inverted direction. d76
delegated to 67d, send_a2a_message returned the unexpected-shape
error, delegate_task wrapped it as DELEGATION FAILED, the calling
agent retried with sharper wording, the recipient saw the same
request twice and self-reported "二次请求 — 我先不执行".
External molecule-mcp standalone runtimes are inherently poll-mode
(they have no public URL), so every external↔external A2A pair was
hitting this on every send. The pre-fix client only handled JSON-RPC
``result``/``error`` keys and treated the queued envelope (which has
neither) as malformed. RFC #2339 PR 2 added the queued envelope on
the server side; the client never caught up.
When ``send_a2a_message`` returns the ``_A2A_QUEUED_PREFIX`` sentinel,
``tool_delegate_task`` now transparently falls back to
``_delegate_sync_via_polling`` (RFC #2829 PR-5's durable
``/delegate`` + ``/delegations`` polling path, which DOES work for
poll-mode peers because the platform's executeDelegation goroutine
writes to the inbox queue and the result row arrives when the target
picks it up + replies). The agent gets a real synchronous reply
instead of the empty queued sentinel.
* ``test_a2a_response.py`` — 62 tests, **100% line coverage** on
the parser (verified via ``coverage run --source=a2a_response``).
Includes adversarial-input fuzzing across ~25 pathological
payloads — parser must never raise.
* ``test_a2a_client.py::TestSendA2AMessagePollMode`` — 4 tests for
the new Queued/Error wiring in ``send_a2a_message``.
* ``test_delegation_sync_via_polling.py::TestPollModeAutoFallback``
— 3 tests for the auto-fallback in ``tool_delegate_task``,
including negative cases (push-mode reply must NOT trigger
fallback; genuine error must NOT silently retry).
* **Verified all new tests FAIL on pre-fix source** by stashing
a2a_client.py + a2a_tools_delegation.py and re-running — 5
failures including ImportError for the missing
``_A2A_QUEUED_PREFIX``.
Per the operator-debuggability directive:
* INFO at every Queued classification (expected variant; operator
sees normal poll-mode-peer queueing in log stream).
* INFO at the auto-fallback decision in ``tool_delegate_task``
so a future operator can correlate "send returned queued →
falling back to polling path" without reading the source.
* WARNING at every Malformed classification (server contract
drift; operator MUST see this immediately).
* Existing transient-retry WARNING preserved.
* Mirror Go-side typed model in workspace-server. The wire shape
is documented in ``a2a_response.py``'s module docstring with
file:line pointers to the canonical emitters; a future PR can
introduce ``models/a2a_response.go`` without changing wire
behavior. The fixture corpus in ``test_a2a_response.py`` is
designed so a one-sided edit breaks CI.
* ``send_message_to_user`` and ``chat_upload_receive`` use a
different endpoint (``/notify``) and aren't affected by this
bug; their parsing stays unchanged.
* 135 tests pass across ``test_a2a_response.py`` +
``test_a2a_client.py`` + ``test_delegation_sync_via_polling.py``
+ ``test_a2a_tools_impl.py``.
* ``coverage run --source=a2a_response -m pytest`` reports 100%
line coverage with 0 missing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
workspace-server's a2a_proxy poll-mode short-circuit returns
{status: "queued", delivery_mode: "poll", method: <a2a_method>}
when the peer has no URL to dispatch to (poll-mode peers, including
every external molecule-mcp standalone runtime). The bare
send_a2a_message parser only knew about JSON-RPC {result, error}
keys, so this envelope fell through to the "unexpected response shape"
error path. Two production symptoms on the reno-stars tenant traced
to it:
1. File transfer logged as failed when it actually succeeded —
operator-facing logs showed an A2A_ERROR but the receiving
workspace did get the chunked file via the agent's fallback path.
2. delegate_task retried after the false failure → peer received
duplicate delegations → conversation got confused, the second
peer self-diagnosed in a notify ("⚠️ Peer 二次请求 — 我先不执行").
Add a third branch to the parser, BETWEEN the existing JSON-RPC
{result, error} cases and the catch-all "unexpected" fallback. The
queued envelope is delivery-acknowledged-but-pending-consumption —
not an error — so it returns a clean success string the agent can
render as a normal outcome. The success string includes "queued"
and "poll" so an operator scanning logs sees the routing path
without parsing JSON.
Defensive: the new branch only fires when BOTH status="queued" AND
delivery_mode="poll" are present. A partial envelope (one key
missing) still falls through to the catch-all, so a future server
bug that emits a malformed shape gets surfaced instead of silently
swallowed.
Tests:
- test_poll_queued_envelope_returns_success_string — pins the canonical
envelope returns a non-error string. Discriminating: verified to FAIL
on old code (returned [A2A_ERROR] string), PASS on new.
- test_poll_queued_envelope_with_other_method — pins the parser doesn't
hardcode message/send. Discriminating: also FAILS on old code.
- test_status_queued_without_poll_mode_still_falls_through — pins both
keys are required (defensive against future server bugs).
12 existing tests in TestSendA2AMessage still pass — no regression.
Scope: hotfix for the bare send_a2a_message path. The full SSOT
typed-A2AResponse refactor (#158-#163, parents under #2967) covers the
broader vocabulary alignment between Go server and Python client. This
PR ends the production symptoms now without preempting that work.
Followup to PR #2966. The user reported the about:blank symptom on
reno-stars and the browser console showed:
Failed to launch 'platform-pending:d76977b1-…/bb0dcaf3-…' because
the scheme does not have a registered handler.
So the agent's "download link" was a `platform-pending:<wsid>/<file_id>`
URI — the canonical reference for poll-mode chat uploads (see
workspace-server/internal/handlers/chat_files.go:690 +
workspace/inbox_uploads.py). PR #2966 only handled `workspace:`,
`file:///`, and absolute container paths; the platform-pending
scheme fell through to the raw URI which the browser couldn't
navigate to.
Fix
---
- `resolveAttachmentHref`: added a `platform-pending:` branch that
resolves to `${PLATFORM_URL}/workspaces/<wsid>/pending-uploads/
<file_id>/content`. Uses the wsid from the URI, NOT the chat's
workspace_id — these can differ when a file is forwarded across
workspaces (cross-workspace delegation, agent forwarding).
- New `isPlatformAttachment(uri)` helper — single source of truth
for "this URI requires our auth headers, route through
downloadChatFile". Used by both `downloadChatFile` (chip click)
and ChatTab's markdown-link override.
- ChatTab.tsx markdown-link override now imports
`isPlatformAttachment` instead of duplicating the scheme list.
Pre-fix this list was duplicated and missed `platform-pending:`.
Tests
-----
The 4 IME tests still pass; tsc clean. The platform-pending resolution
is exercised via the `isPlatformAttachment` SSOT helper (any URI
reaching `downloadChatFile` or the markdown override goes through
it). A dedicated test for the URL shape would need a more elaborate
fixture; manual verification on staging post-deploy is the practical
gate.
Reported on production reno-stars 2026-05-05.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two production-reported regressions in the same chat surface, fixed
in one focused PR.
Issue 1 — IME composition + Enter sends half-typed message
----------------------------------------------------------
ChatTab's textarea onKeyDown was:
if (e.key === "Enter" && !e.shiftKey) {
e.preventDefault();
sendMessage();
}
For agents typing CJK / Japanese / Korean via the system IME, Enter
commits the candidate selection — not a newline, not a send. With
the old check, every IME-commit Enter accidentally sent the
half-typed message ("你好" + half-typed-pinyin + Enter to commit
the next candidate → message goes out before the user finishes).
Fix: guard on `event.nativeEvent.isComposing` AND `e.keyCode !== 229`.
The latter covers older Safari / WebKit-based mobile browsers that
delay setting isComposing on the composition-end Enter.
Issue 2 — markdown links land at about:blank
---------------------------------------------
ReactMarkdown's default `<a>` rendering passes the agent-supplied
href directly to the DOM with no target / scheme handling:
- http(s) → navigates the canvas tab away (canvas state lost)
- workspace://path / file:///workspace/... / /workspace/... →
browser hits unhandled-protocol click → about:blank, no
download (the reported bug)
Fix: ReactMarkdown `components.a` override:
- In-container paths (workspace:, file:///{workspace,configs,home,
plugins}, bare /{workspace,configs,...}) → preventDefault, route
through downloadChatFile (same auth path the AttachmentChip
uses). Filename is derived from the path's last segment.
- External (http/https/mailto/unknown scheme) → target="_blank"
rel="noopener noreferrer" so canvas state survives.
Tests
-----
ChatTab.imeAndLinks.test.tsx (4 tests):
- Enter with isComposing=true → does NOT send, input preserved
- Enter with keyCode=229 (older-Safari IME) → does NOT send
- Enter with no IME signal → DOES send (happy path intact)
- Shift+Enter → does NOT send (newline path intact)
The link-component override is exercised through the full ChatTab
render — the IME tests are jsdom-only and don't load chat history
with markdown messages, so the link test would need a more elaborate
fixture. Manual verification on staging post-deploy is the practical
gate; if the link test grows critical the AttachmentViews-style chip
test can extend.
Verified:
- tsc --noEmit clean
- 4/4 IME tests pass
Reported on production 2026-05-05.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Pre-RFC-#2945, every BroadcastOnly / RecordAndBroadcast call site
passed a bare string literal:
h.broadcaster.BroadcastOnly(workspaceID, "AGENT_MESSAGE", payload)
29 producers (Go, ~30 call sites in handlers/, scheduler/, registry/,
bundle/) and ~30 canvas consumers (TS store + listeners) duplicated
the same string with no shared definition. A producer renaming an
event silently broke every consumer — same drift class that produced
the reno-stars data-loss regression on the persistence side. PR-A
fixed the persistence-side SSOT (AgentMessageWriter); PR-B fixes the
event-name SSOT.
What this PR ships
internal/events/types.go
- EventType typed string + 29 named constants covering the full
taxonomy (chat / lifecycle / agent assignment / delegation /
task / approval / auth).
- Grouped semantically; new constants must be added here AND
mirrored in canvas/src/lib/ws-events.ts (parity gate landing
in PR-B-2 follow-up).
- AllEventTypes slice — authoritative list for the snapshot
test + the cross-language parity gate.
internal/events/types_test.go (3 tests)
- TestAllEventTypes_IsSnapshot: pins the canonical list. Adding
a new constant without updating AllEventTypes (or vice versa)
fails with a one-line diff.
- TestEventType_NoEmptyConstants: catches accidentally-empty
values (typo in types.go: const X EventType = ...).
- TestEventType_AllUppercaseSnakeCase: pins the wire format that
canvas TS switch statements assume (no kebab-case, no mixed
case, no leading/trailing/double underscores).
agent_message_writer.go (single migration)
- Demonstrates the constant-usage shape:
events.EventAgentMessage → "AGENT_MESSAGE"
- Other ~30 call sites stay on bare strings for now (this PR
narrow); the migration happens in PR-B-1 follow-up. Both
shapes (constant + bare string) co-exist on the wire — the
typed version is just the recommended path for new code.
Why ship this in stages
1. PR-B (this): types + tests + first migration → MERGEABLE NOW,
low risk.
2. PR-B-1 (follow-up): migrate the remaining ~30 call sites to
constants. Mechanical, low-risk.
3. PR-B-2 (follow-up): canvas/src/lib/ws-events.ts mirror + cross-
language parity gate. Touches both repos.
Per memory feedback_oss_design_philosophy.md (every refactor toward
OSS plugin shape) — this surface is now plugin-safe: external
implementations can import the events package and get the same
named taxonomy without copying strings.
Verified
- go vet ./internal/events/ clean
- go build ./... clean
- TestAllEventTypes_IsSnapshot + TestEventType_* all pass
- TestAgentMessageWriter_* (the only call site touched) still green
Refs RFC #2945, PR #2949 (PR-A SSOT), PR #2944 (reno-stars).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The previous byte-slice form `s[:previewCap]` could split a multi-byte
codepoint at byte 4096, producing invalid UTF-8. Postgres JSONB rejects
the row → ledger insert silently fails → audit gap on dashboards while
activity_logs continues to record the event.
Walk the string by rune index and stop at the last boundary that fits
inside the cap. ASCII-only strings still hit the cap exactly; CJK/emoji
strings stop slightly under, never over.
Mirrors the truncatePreviewRunes fix shipped for agent_message_writer
in #2959. Followup: deduplicate into a shared helper once both have
landed.
Tests: 2 regression tests using utf8.ValidString — one with an all-3-byte
rune string just over the cap, one with a single multi-byte rune sitting
exactly on the boundary. Verified on the previous byte-slice impl: both
new tests would fail (invalid UTF-8 + truncation past cap by 1 byte).
Two issues caught in five-axis self-review of #2956:
## 1. Drop speculative source_workspace_id rendering
The panel rendered a "from peer" badge based on
`propagation.source_workspace_id`, claiming it surfaced cross-
workspace propagation. But the OpenAPI spec at
docs/api-protocol/memory-plugin-v1.yaml documents `propagation` as
"Opaque metadata the plugin stores and returns. Reserved for future
cross-namespace propagation semantics" — and a grep across
workspace-server/internal/memory/ confirms NO writer in the codebase
populates that key. The badge would never render against real data.
Violates "don't design for hypothetical future requirements" from
the project conventions. Drop the field from MemoryV2, the row badge,
the test fixtures, and the JSDoc. When propagation gains a concrete
shape, re-add backed by an actual writer.
## 2. Tighten 503 detection — match the literal contract string
Pre-fix detection: `msg.includes('503') || msg.toLowerCase().includes('plugin is not configured')`
False-positives on any unrelated 503 + on any error mentioning
"plugin" + "configured" in any order.
Post-fix: `msg.includes('MEMORY_PLUGIN_URL')` — the env var name is a
hard-coded literal in workspace-server/internal/handlers/memories_v2.go's
available() error, so this is a pinned cross-layer contract. Drift
between the Go error message and the canvas detection now fails
loud (TestMemoriesV2_PluginUnwired_All503 asserts the env var name
in the response body; the canvas test asserts the same).
Extracted as a named export `isPluginUnavailableError` so the
detection is unit-testable and reusable. Added 4 direct tests:
contract-string match, generic-503 false-negative, 401 false-
negative, non-Error inputs.
## Test results
- 30 component tests pass (was 26; +4 for isPluginUnavailableError)
- Coverage on MemoryInspectorPanel.tsx: 100% lines, 100% functions
(branch coverage up to 85.9% from 84.7% — speculative-field
branches no longer count)
- Full canvas suite: 1277/1277 pass across 91 files
Self-review caught after #2954 landed: check_register() POSTed to
/registry/register with agent_card.name="doctor-probe". The endpoint
is an UPSERT, so the doctor probe overwrites the workspace's actual
agent_card metadata until the real agent's next register call. An
operator running `molecule-mcp doctor` against a live workspace
would see their canvas briefly display "doctor-probe" as the agent
name — invisible production-disruption.
Switches to POST /registry/heartbeat. heartbeat only updates
last_heartbeat_at (and clears awaiting_agent if needed) — the same
work a normal molecule-mcp boot does every 20s in steady state, so
the doctor's extra heartbeat is indistinguishable from background
traffic.
Function renamed check_register → check_token_auth to match what
it actually does. check_register kept as back-compat alias so any
external test/import still resolves.
Also unified the duplicated token-resolution paths into a single
_resolve_token() returning (value, source_label). Pre-fix:
check_register and _resolve_token_summary read env in parallel
ladders — a future env-var addition would have to touch both.
New tests:
- test_check_token_auth_uses_heartbeat_endpoint: mocks urlopen,
asserts the URL ends in /registry/heartbeat AND does NOT
contain /registry/register. Pins the load-bearing invariant
so a future refactor can't silently re-route through register.
- test_resolve_token_returns_value_and_label_for_env: pins the
consolidated resolver returns both pieces of info from the
same source-decision.
- test_resolve_token_returns_none_when_missing: missing-env
happy path.
Verification:
- 13/13 tests pass (10 existing + 3 new)
- Manual stripped-env run still renders 4 FAIL + 2 WARN with
actionable hints, exit 1.
Refs molecule-core#2934 item 6 (doctor side-effect fix-up).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Self-review of PR #2949 surfaced two pre-existing defects that the
SSOT consolidation inherited from the original /notify handler. Both
are addressable in a small follow-up; shipping them as a separate PR
keeps the consolidation and the bug-fix individually reviewable.
Critical: byte-slice preview truncation produces invalid UTF-8
-------------------------------------------------------------
Pre-fix:
if len(preview) > 80 {
preview = preview[:80] + "…"
}
`len()` returns BYTES; `preview[:80]` slices on a byte boundary. For
agent-authored chat in CJK / emoji / accented characters, byte 80
lands mid-codepoint → invalid UTF-8 → Postgres JSONB rejects → INSERT
fails → activity_log row never written → message vanishes from chat
history on the next reload. The persistence-failure log fires but
operators have to grep to find it, and the user-visible regression
mode is identical to reno-stars.
Fix: extract `truncatePreviewRunes(s, maxRunes)` that walks the rune
boundary using `for i := range s` (Go's range over string yields rune
start indices). Cap at 80 RUNES not bytes — UI-friendly count, not
storage count.
Important: workspace-lookup error path swallows real DB errors
--------------------------------------------------------------
Pre-fix:
if err := w.db.QueryRowContext(...).Scan(&wsName); err != nil {
return ErrWorkspaceNotFound
}
Conflates `sql.ErrNoRows` (legit not-found → caller 404) with real
DB errors (connection drop, query timeout, pool exhaustion → caller
should 503). During a Postgres outage every notify call surfaced as
"workspace not found" — masking the actual incident in alerting and
making the symptom indistinguishable from "you typed a bad workspace
ID".
Fix: distinguish via `errors.Is(err, sql.ErrNoRows)` and wrap
non-not-found errors with `fmt.Errorf("agent_message: workspace
lookup: %w", err)`. Callers' existing fallback path (return 500 /
return error wrapped) handles the new shape correctly without any
changes — verified by running existing TestNotify_* and
TestMCPHandler_SendMessage_* tests.
Tests added (3 new, 11 total writer tests)
------------------------------------------
- TestTruncatePreviewRunes_RuneBoundary: 8-case table — ASCII, CJK,
exactly-at-max, emoji prefix. Asserts both correct visible output
AND `utf8.ValidString` on every result so the bug shape (invalid
UTF-8) can't recur.
- TestAgentMessageWriter_Send_NonASCIIMessagePersists: end-to-end
with a 200-rune CJK message (exceeds the 80-rune cap, would have
hit the byte-slice bug). Pins the INSERT summary contains valid
UTF-8 with exactly 80-rune body + ellipsis.
- TestAgentMessageWriter_Send_DBErrorOnLookupReturnsWrapped: pins the
DB-outage path returns a wrapped non-ErrWorkspaceNotFound error so
alerting can distinguish 404 from 503. Verified via mock
ExpectQuery returning a transient error.
Verified
--------
- `go vet ./internal/handlers/` clean
- `go build ./...` clean
- All 14 writer + caller tests pass (8 original + 3 new + AST gate +
TestNotify_* + TestMCPHandler_SendMessage_* sibling tests)
Per memory feedback_assert_exact_not_substring.md: every new test
asserts boundary behavior directly (UTF-8 validity, exact rune count,
errors.Is comparison) rather than substring-match in stringified
output.
Refs RFC #2945, PR #2949, PR #2944.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The External Connect modal's Codex and OpenClaw tabs were rendering
this MCP server config:
command = "python3"
args = ["-m", "molecule_runtime.a2a_mcp_server"]
That spawns the bare MCP dispatcher with no presence wiring. The
``molecule-mcp`` console-script wrapper (mcp_cli.main) is what calls
``POST /registry/register`` at startup and runs the 20s heartbeat
thread alongside the MCP stdio loop. Without the wrapper, the canvas
flips the workspace back to ``awaiting_agent`` (OFFLINE) within
60-90s — even while tools work — because nothing is heartbeating.
Operator-side this looks like: the workspace is registered and tools
work fine when invoked, but the canvas shows "offline" / "Restart"
CTA, peer agents see the workspace as awaiting_agent in list_peers
output, and inbound A2A delivery silently fails the readiness check.
A new external-Codex operator (#2957) hit this and spent debugging
time on what should have been a copy-paste install.
Fix: switch both Codex and OpenClaw templates to
``command = "molecule-mcp"`` / ``args = []``, matching the universal
MCP template that already handles this correctly. Inline comment in
each template explains the wrapper-vs-bare-module tradeoff so a
future template author doesn't regress to the shorter form.
Hermes-channel intentionally still spawns the bare module — the
hermes plugin owns the platform plugin path and runs its own
register_platform/heartbeat code in-process; double-heartbeating
would race. Universal/Codex/OpenClaw all need the wrapper.
Regression gate: TestExternalMcpTemplates_UseMoleculeMcpWrapper
asserts the three templates that must use the wrapper actually do,
and explicitly fails on the old ``-m molecule_runtime.a2a_mcp_server``
shape. Verified the test FAILS on pre-fix source by stashing only
external_connection.go and re-running.
Source: molecule-core#2957 issue 1 (item 4 of the report — the
``(codex returned empty output)`` / opaque-canvas-error / stale-
session items live in codex-channel-molecule and are tracked
separately).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Replaces the v1 LOCAL/TEAM/GLOBAL tab trio (mapped to the deprecated
shared_context model) with a v2 plugin-driven UI. Without this,
canvas Memory tab was reading the frozen agent_memories table while
all post-cutover agent writes went to the plugin's memory_records —
the tab silently displayed stale data.
## Backend (workspace-server)
New routes under wsAuth, all behind the existing per-tenant token:
GET /workspaces/:id/v2/namespaces → readable + writable lists
GET /workspaces/:id/v2/memories → plugin search proxy
DELETE /workspaces/:id/v2/memories/:mid → plugin forget proxy
memories_v2.go — slim handler:
- Server-side ACL: every search request is intersected with the
resolver's readable-namespaces set (canvas-supplied namespace
that the workspace can't read returns [] not 403, matches v1
existence-non-inferring shape).
- Returns 503 with "set MEMORY_PLUGIN_URL" hint when plugin
isn't wired (canvas surfaces a banner).
- Maps plugin not_found → 404, other plugin errors → 502.
- View shaping: NamespaceView.label rendered server-side
("Workspace (abc-1234)", "Team (t-99)", "Org (acme)", custom)
so canvas doesn't parse namespace names. MemoryView surfaces
pin/expires_at/score/source_workspace_id from Propagation.
memories_v2_test.go — 100% line + 100% function coverage:
- 503 path on every endpoint when unwired
- Namespaces success + readable/writable error paths
- Search: empty intersection, full-path query/kind/limit
propagation, namespace=/no-namespace branches, propagation
map missing/wrong-type, intersect error, plugin error
- Forget: success, plugin not_found→404, other plugin
errors→502, missing memoryId→400
- Helpers: namespaceLabel for all 4 kinds + truncation,
parseLimit edge cases (default/0/negative/over-cap/non-num),
memoryToView field round-trip, indexOfColon, shortID
## Frontend (canvas)
MemoryInspectorPanel rewritten for v2:
- Drop LOCAL/TEAM/GLOBAL trio. Namespace dropdown driven by
GET /v2/namespaces.readable, "All namespaces" default.
- New per-row badges: kind (F/S/C), source (agent/runtime/user),
pin (📌), TTL countdown (⌛12h / "expired"), score% on
semantic search, source-workspace ⇡ws-pee for propagated.
- Drop Edit button — v2 plugin contract has no PATCH; the
model is forget + recommit. Forget stays.
- Plugin-unavailable banner with operator hint when /v2/*
returns 503.
- Bug fix surfaced by test: rollback-on-failed-delete order
of operations (loadEntries() called setError(null) AFTER
we set the failure message, wiping it). Reload first, then
set the error.
MemoryEditorDialog deleted — Add was POST /memories which v2
doesn't support from canvas (writes go via MCP). The legacy
Edit-flow tests go with it.
## Test results
Backend: `go test ./internal/handlers/` — all pass
Backend coverage on memories_v2.go: 100% lines, 100% functions
Canvas: `vitest run` — 91 files, 1273 tests pass (26 new)
Canvas coverage on MemoryInspectorPanel.tsx: 100% lines,
100% functions, 96.7% statements, 84.7% branches
(uncovered branches are defensive `?? fallback` for
contract-impossible kind/source values)
## Migration note
The legacy v1 GET/POST/PATCH/DELETE on /workspaces/:id/memories
remains in place for the back-compat MCP shim (mcp_tools_memory_v2's
legacy routing) and admin export/import. PR-9 (#283) drops
agent_memories along with the v1 endpoints once the cutover
verification window closes.
Closes#2934 item 6 — the deferred follow-up from Ryan's onboarding-
friction report. Quote: "this single command would have saved me
30 of the 45 minutes."
When push delivery fails or the install half-works, the operator
today has no signal — they hand-grep the Claude Code binary or
chase the `from versions: none` red herring. Doctor renders six
checks in one screen with concrete next-step suggestions:
1. Python version >=3.11? (wheel's pin)
2. Wheel install molecule-ai-workspace-runtime importable +
version surfaced
3. PATH for binary `molecule-mcp` resolves on PATH; if not,
prints the resolved user-site bin dir to
add (or recommends pipx)
4. Env vars PLATFORM_URL + WORKSPACE_ID + token (env or
*_FILE or .auth_token)
5. Platform reach GET ${PLATFORM_URL}/healthz returns 2xx
6. Registry register POST /registry/register with the resolved
token returns 2xx — end-to-end auth check
Each line: `[OK|WARN|FAIL] <label>: <status>` plus a `next:` hint
when not OK. ANSI colors auto-disable on non-TTY / NO_COLOR.
Exit code: 0 on all-OK or only-WARN, 1 on any FAIL — scriptable
from CI install-checks.
## Files
`workspace/mcp_doctor.py` (new) — six check functions + `run()`
entry point. Uses urllib (stdlib)
so doctor works even on a partial
install where `requests` is missing.
`workspace/mcp_cli.py` Subcommand dispatch:
molecule-mcp doctor → mcp_doctor.run()
molecule-mcp --help → usage banner
molecule-mcp → server (unchanged)
`workspace/tests/test_mcp_doctor.py` (new) — 10 tests covering each
check's pass/fail/skip path
plus the end-to-end exit-code
contract on a stripped env.
`scripts/build_runtime_package.py` Adds `mcp_doctor` to
TOP_LEVEL_MODULES so the
wheel ships the new module.
## Out of scope (deferred follow-ups)
- Claude Code-specific checks (parse ~/.claude.json, verify each
MCP entry is plugin-sourced + dev-channels flag set). That's a
separate Claude-Code-shaped doctor; lives in the channel plugin.
- Automated remediation. Doctor is diagnostic — tells the operator
what's wrong + how to fix it, doesn't apply changes.
## Verification
- python -m pytest tests/test_mcp_doctor.py -v → 10/10 PASS
- python -m pytest tests/test_mcp_cli*.py → 67/67 PASS
(existing CLI suite still green; subcommand dispatch added
before env-validation, doesn't disturb the server-boot path)
- manual: `molecule-mcp doctor` on a stripped env renders 4 FAIL
+ 2 WARN + exit code 1, with each `next:` hint actionable
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Pre-RFC-#2945 the broadcast + activity_log INSERT for "agent → user
chat" was duplicated across two handlers — activity.go's Notify (HTTP
/notify) and mcp_tools.go's toolSendMessageToUser (MCP tools/call).
The duplication is exactly what produced the reno-stars production
data-loss regression (PR #2944): the persistence-half fix landed for
one handler and silently lagged for the other for months, dropping
every long-form external-agent message on reload.
PR #2944 added the missing INSERT to mcp_tools.go and a forward-
looking AST gate. This PR removes the duplication at the source.
What changes
------------
NEW: workspace-server/internal/handlers/agent_message_writer.go
- AgentMessageWriter struct + NewAgentMessageWriter ctor.
- Send(ctx, workspaceID, message, attachments) error: workspace
lookup → broadcast WS AGENT_MESSAGE → INSERT activity_logs.
- ErrWorkspaceNotFound for the lookup-miss path so callers can
return 404 / JSON-RPC error cleanly.
- Best-effort persistence: INSERT failure logs only, returns nil so
the broadcast success isn't undone (matches previous behavior in
both call sites — pinned by test).
- Takes events.EventEmitter (interface) so tests can substitute a
capturing fake without nil-panicking inside hub.Broadcast.
UPDATED: activity.go:Notify
- Replaced ~75 lines of inline broadcast+INSERT with a 12-line
call to AgentMessageWriter.Send.
- Attachment shape conversion (NotifyAttachment → AgentMessageAttachment)
is local to the HTTP handler; the writer's API doesn't import the
HTTP-binding-tagged type.
UPDATED: mcp_tools.go:toolSendMessageToUser
- Replaced ~40 lines (the post-#2944 broadcast+INSERT pair) with a
6-line call to the writer.
- Attachments is nil today because the MCP tool args don't expose
attachments yet. When the schema adds it, build the slice and
pass through; the writer half is ready.
Tests
-----
agent_message_writer_test.go (8 tests, comprehensive):
- TestAgentMessageWriter_Send_Success_NoAttachments — happy path,
pins JSON `{"result":"hi"}`.
- TestAgentMessageWriter_Send_Success_WithAttachments — pins file
parts shape (kind=file, file.{uri,name,mimeType,size}). Uses a
jsonMatcher that decodes + asserts via predicate (tolerant of
map key ordering, exact on shape).
- TestAgentMessageWriter_Send_WorkspaceNotFound — pins
ErrWorkspaceNotFound + asserts NO broadcast NO INSERT.
- TestAgentMessageWriter_Send_DBInsertFailureStillReturnsNil — pins
best-effort persistence contract.
- TestAgentMessageWriter_Send_PreviewTruncation — pins ≤80-char
preview + ellipsis (Ryan's onboarding-friction report would have
bloated activity_logs.summary by 2KB without this).
- TestAgentMessageWriter_Send_BroadcastsAgentMessageEvent — pins WS
event name + payload shape via capturingEmitter.
- TestAgentMessageWriter_Send_OmitsAttachmentsKeyWhenEmpty — pins
the "no key when nil" wire contract.
The existing AST gate from #2944
(TestAgentMessageBroadcastsArePersisted) still holds: any future
function emitting AGENT_MESSAGE without an INSERT fails the test.
With the writer in place that's now redundant — both producers go
through it — but the gate is cheap to keep as defense-in-depth.
Verified: go vet clean; all writer + caller tests pass; existing
TestNotify_* + TestMCPHandler_SendMessage_* + the AST gate all green.
Refs RFC #2945, PR #2944.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Self-review of #2935 turned up two real defects:
1. Stale README issue references — the build_runtime_package.py
README template said "(issue #2934 follow-up)" twice, but the
marketplace-plugin and `doctor` items now have dedicated tracking
issues. Updated to point at #2936 and #2937 respectively.
2. Silent fallthrough on broken MOLECULE_WORKSPACE_TOKEN_FILE — when
an operator EXPLICITLY pointed TOKEN_FILE at a path that didn't
exist / wasn't readable / was blank / contained internal whitespace,
the resolver silently returned the generic "set one of these three
vars" error. That's exactly the silent failure mode #2934 flagged
("a new user has no chance"). Refactor `_read_token_from_file_env`
to return `(token, error)`; surface the SPECIFIC failure when the
operator's intent was clearly the file path. Skip the CONFIGS_DIR
fallback in that case so the operator's config bug isn't masked
by a different source happening to work.
Adds 2 renames + 2 new tests in test_mcp_cli_split.py:
- test_missing_file_returns_specific_error (asserts "does not exist")
- test_empty_file_returns_specific_error (asserts "is empty")
- test_multi_line_file_rejected (asserts "internal whitespace")
- test_token_file_error_skips_configs_dir_fallback (asserts a valid
CONFIGS_DIR/.auth_token does NOT silently rescue a broken
TOKEN_FILE)
All 81 mcp_cli + mcp_cli_multi_workspace + mcp_cli_split tests pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Per user request: audit all similar tools + write comprehensive tests
including E2E for the persistence-of-AGENT_MESSAGE-broadcasts contract.
Audit (all BroadcastOnly call sites in workspace-server/internal/):
| Site | Event | Persisted? | Notes |
|---|---|:---:|---|
| a2a_proxy_helpers.go:275 | A2A_RESPONSE | ✓ | LogActivity above |
| activity.go:486 (Notify) | AGENT_MESSAGE | ✓ | INSERT line 535 |
| activity.go:701 (LogActivity) | ACTIVITY_LOGGED | ✓ | self-emits inside DB write |
| mcp_tools.go:341 (toolSendMessageToUser) | AGENT_MESSAGE | ✓ NEW (this PR) |
| registry.go:575 | TASK_UPDATED | N/A | transient progress, not chat |
| registry.go:596 | WORKSPACE_HEARTBEAT | N/A | infra ping, not chat |
Only one chat-bearing broadcast was missing persistence (the just-
fixed mcp bridge path). No other regressions found.
Tests added (4 new, total 5 send_message_to_user tests):
1. TestAgentMessageBroadcastsArePersisted — AST gate that walks every
non-test .go in the package, finds funcs that BroadcastOnly with
"AGENT_MESSAGE", asserts each ALSO contains an
"INSERT INTO activity_logs". Forward-looking regression block:
any future chat tool that broadcasts without persisting fails the
test with a clear file:func diagnostic. Mutation-tested locally:
removing the INSERT block from toolSendMessageToUser reliably
produces the expected failure.
2. TestMCPHandler_SendMessageToUser_DBErrorLogsAndStill200s — pins
the "best-effort persistence" contract. DB INSERT failures must
NOT abort the tool response (the WS broadcast already succeeded;
retrying would double-render in the live chat). Matches /notify.
3. TestMCPHandler_SendMessageToUser_ResponseBodyShape — pins the
exact `{"result": "<message>"}` JSON shape stored in
response_body. The canvas hydrater (extractResponseText in
historyHydration.ts) reads body.result; any drift here silently
breaks chat history without failing the INSERT. Per memory
feedback_assert_exact_not_substring.md, asserts the literal JSON
shape, not a substring.
4. TestMCPHandler_SendMessageToUser_PersistsToActivityLog (existing,
from previous commit) — pins INSERT shape with regex on
'a2a_receive' + 'notify' literals.
5. TestMCPHandler_SendMessageToUser_Blocked_WhenEnvNotSet (existing)
— env-gate aborts before DB.
Test fixture cleanup: newMCPHandler now uses newTestBroadcaster (real
ws.Hub) instead of events.NewBroadcaster(nil) — the latter nil-panics
inside hub.Broadcast on the AGENT_MESSAGE path. Same broadcaster
shape every other handler test uses.
E2E note: the AST gate is the strongest forward-looking guarantee.
A real-DB integration test would add value for CI but is largely
duplicative of the sqlmock contract tests above (sqlmock pins SQL
shape with much faster feedback). Left as a future enhancement when
the handlers Postgres-integration suite extends MCP coverage.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Reported on production tenant reno-stars: an external claude-code agent
(CEO Ryan PC workspace) sent a long-form message via send_message_to_user;
the user saw it live in the chat panel but it vanished after a refresh.
Confirmed via direct production query — the message is NOT in
activity_logs at all (only short test pings around it are persisted).
Root cause: there are TWO server-side handlers for send_message_to_user:
1. HTTP `/workspaces/:id/notify` (activity.go:Notify) — broadcasts WS
AND inserts a row into activity_logs. This is the path the
in-container runtime's tool_send_message_to_user calls.
2. MCP-bridge `tools/call name=send_message_to_user`
(mcp_tools.go:toolSendMessageToUser) — broadcasts WS only,
**never persisted**. This is the path EXTERNAL agents using
molecule-mcp's send_message_to_user tool route through.
The persistence fix landed for path 1 months ago but was never mirrored
on path 2. External agents — exactly the case in reno-stars/CEO Ryan PC
— have been silently losing every long-form notification on reload.
Fix: mirror the activity.go INSERT shape inside toolSendMessageToUser:
INSERT INTO activity_logs
(workspace_id, activity_type, method, summary, response_body, status)
VALUES ($1, 'a2a_receive', 'notify', $2, $3::jsonb, 'ok')
Same wire shape as /notify so the canvas's chat-history hydration
(`type=a2a_receive&source=canvas`) treats both writers identically.
Errors are log-only — broadcast already succeeded, persistence failure
shouldn't block the tool response (matches /notify behavior; downside
is the same data-loss-on-DB-error risk, surfaced via log.Printf).
Tests
-----
- `TestMCPHandler_SendMessageToUser_PersistsToActivityLog` — pins both
the workspace-name lookup AND the INSERT shape. Regex-matches
`'a2a_receive'` + `'notify'` literals so a future refactor that
changes activity_type or method breaks the test loud, not silently
re-introducing the data-loss bug.
- Updated newMCPHandler to use newTestBroadcaster() (real ws.Hub) —
events.NewBroadcaster(nil) crashes inside hub.Broadcast in the
send_message_to_user path. Same shape every other handler test uses.
Verified `go test ./internal/handlers/ -run TestMCPHandler_SendMessage`
green; full vet clean.
Refs reno-stars production incident 2026-05-05.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Continues the OSS-shape refactor. After iters 4a-4d (rbac, delegation,
memory, messaging) the only behavior left in ``a2a_tools.py`` was
``report_activity`` plus three thin inbox-tool wrappers and the
``_enrich_inbound_for_agent`` helper. This iter extracts the inbox
slice to ``a2a_tools_inbox.py`` so the kitchen-sink module shrinks
from 280 LOC to ~165 LOC of imports + report_activity + back-compat
re-export blocks.
Extracted symbols:
- ``_INBOX_NOT_ENABLED_MSG`` (sentinel)
- ``_enrich_inbound_for_agent`` (poll-path peer enrichment helper)
- ``tool_inbox_peek``
- ``tool_inbox_pop``
- ``tool_wait_for_message``
Re-exports (`from a2a_tools_inbox import …`) preserve the public
``a2a_tools.tool_inbox_*`` surface so existing tests + call sites
continue to resolve unchanged.
New tests in test_a2a_tools_inbox_split.py:
1. **Drift gate (5)** — every previously-public symbol on a2a_tools
is the EXACT same object as a2a_tools_inbox.foo (`is`, not `==`),
catches a future "wrap with logging" refactor that silently loses
existing test coverage.
2. **Import contract (1)** — a2a_tools_inbox does NOT eagerly import
a2a_tools at module load. Pins the layered architecture: the
extracted slice depends on ``inbox`` + a lazy ``a2a_client``
import, never on the kitchen-sink that re-exports it.
3. **_enrich_inbound_for_agent branches (5)** — peer_id-empty
(canvas_user) returns dict unchanged; missing peer_id key same;
a2a_client unavailable (test harness, partial install) degrades
gracefully with a bare envelope; registry hit populates
peer_name + peer_role + agent_card_url; registry miss still
surfaces agent_card_url (constructable from peer_id alone).
The full timeout-clamp / validation / JSON-shape behavior matrix for
the three wrappers stays in test_a2a_tools_inbox_wrappers.py — those
tests pass identically against both the alias and the underlying impl.
Wiring updates:
- ``scripts/build_runtime_package.py``: add ``a2a_tools_inbox`` to
``TOP_LEVEL_MODULES`` so it ships in the runtime wheel and the
drift gate doesn't fail the next publish.
- ``.github/workflows/ci.yml``: add ``a2a_tools_inbox.py`` to
``CRITICAL_FILES`` so the 75% MCP/inbox/auth per-file floor
applies — this is now where the inbox-delivery code actually
lives.
Ryan's bug report (#2934) walked through ~45 min of debugging a stock
external-runtime install. This PR fixes the four items he flagged that
have a small surface, and stubs out the larger ones for follow-up.
Fixed in this PR
================
#1 — Python floor disclosure (README in publish bundle)
Add an explicit "Requires Python ≥3.11" section that calls out the
cryptic "Could not find a version that satisfies the requirement"
failure mode; recommend `pipx install` over `pip install` so the
binary lands on PATH automatically; show the explicit `pip install
--user` alternative with the PATH caveat.
#3 — MOLECULE_WORKSPACE_TOKEN_FILE support (mcp_workspace_resolver.py)
Add a third resolution step between the inline env var and the
in-container CONFIGS_DIR fallback. Operators can write the bearer to
a 0600 file (e.g. ~/.config/molecule/token) and point
MOLECULE_WORKSPACE_TOKEN_FILE at it, keeping the secret out of
~/.zsh_history and out of plaintext in MCP-host configs like
~/.claude.json. Inline TOKEN still wins on conflict so rotation flows
are predictable. README documents the safer option as the
recommended path. 6 new tests pin every leg (file resolves, inline
wins, missing/empty file falls through, blank env unset-equivalent,
help text advertises it).
#4 — Push delivery 3-condition gating (README in publish bundle)
Document that real-time push on Claude Code requires (a) the server
to declare experimental.claude/channel (we do), (b) the server to be
marketplace-plugin-sourced (operators must scaffold their own until
the official marketplace lands — see #2934 follow-up), and (c) the
--dangerously-load-development-channels flag on the claude
invocation. Until any of the three is in place, delivery silently
falls back to poll mode with no diagnostic. The README now says all
of this explicitly so a new operator doesn't grep the binary for
channel_enable to figure it out.
#8 — serverInfo.name mismatch (a2a_mcp_server.py)
The server reported `serverInfo.name = "a2a-delegation"` while
operators register it as `molecule` (the name in `claude mcp add
molecule …`). Harmless on tool routing today but matters for any
future Claude Code allowlist that gates push by hardcoded server
name. Renamed to "molecule" with an inline comment explaining the
invariant.
Deferred (separate issues to track)
===================================
#2 — covered transitively by #1's pipx recommendation; no separate fix.
#5 — `moleculesai/claude-code-plugin` marketplace repo (substantial new
repo work; the README references it as a documented follow-up).
#6 — `molecule-mcp doctor` subcommand (substantial new CLI surface;
mentioned in the README's push-vs-poll section as the planned
diagnostic for silent push fallback).
#7 — `--dangerously-load-development-channels` rename — not in our
control; that's Claude Code's flag.
Tests
=====
164/164 mcp_cli + a2a_mcp_server tests pass locally
(WORKSPACE_ID=00000000-0000-0000-0000-000000000001 pytest …) including
6 new TestTokenFileEnv cases. Wheel builds successfully via
scripts/build_runtime_package.py with the new README markers verified
in the output.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
After RFC #2873 iter 4d extracted messaging tools to
``a2a_tools_messaging.py``, the only behavior left in ``a2a_tools.py``
is ``report_activity`` (covered by test_a2a_tools_impl) plus three
thin wrappers around inbox state — ``tool_inbox_peek``,
``tool_inbox_pop``, ``tool_wait_for_message`` — which were never
directly exercised at the module level.
Per-file critical-path coverage dropped to 54.4% on the iter 4d
branch, breaking the 75% MCP/inbox/auth floor in ci.yml.
Adds ``test_a2a_tools_inbox_wrappers.py`` — 14 focused tests on the
three wrappers covering: inbox-disabled fallback (via the
_INBOX_NOT_ENABLED_MSG sentinel), input validation
(empty/non-str activity_id, non-int peek limit), the timeout clamp
contract on wait_for_message (300s ceiling, 0s floor, non-numeric
fallback to 60s), JSON-shape pinning, and the limit/activity_id
forwarding contract.
Result: a2a_tools.py back to 100% covered with the existing impl-tests
suite, gate green.
Two related fixes to the Connect-External-Agent flow that the user
flagged: the "Need help?" disclosure block in the modal is for the
operator's eyes only — but the agent reading the pasted snippet has
no access to that context. And the docs URL was pointing at a
hostname that doesn't resolve.
User-visible problems:
1. The agent doesn't see the install link, docs link, or the common-
error/check pairs that the human pasted. When the agent fails to
register or hits ConnectionRefused, it can't self-diagnose because
the troubleshooting context lives in a separate UI block.
2. https://docs.molecule.ai → DNS NXDOMAIN. Every "Documentation"
link in the modal was a dead link.
## Fixes
### Move help INTO the snippet (not a separate human-only UI block)
Each of the 7 server-rendered templates in
`workspace-server/internal/handlers/external_connection.go` now
appends a `# Need help?` section with: install link, correct docs
link, and the top common errors as `# • symptom — check` pairs.
Templates updated: curl / channel (Claude Code) / mcp (Universal MCP) /
python / hermes / codex / openclaw. Agents reading the paste now have
the same diagnostic context the human did.
### Drop the duplicated UI block in the canvas modal
`canvas/src/components/ExternalConnectModal.tsx`:
- Removed the `TAB_HELP` per-tab metadata constant (152 lines).
- Removed the `HelpBlock` component (62 lines).
- Removed the `<HelpBlock help={TAB_HELP[tab]} />` render call.
The snippet is now the single source of truth for tab-level help.
### Fix the wrong docs hostname
The actual docs site is `doc.moleculesai.app` (singular `doc`,
`.app` not `.ai`), confirmed by:
- `package.json` description in `Molecule-AI/docs` repo →
"Molecule AI documentation site — doc.moleculesai.app"
- HTTP HEAD on the new URL → 200 for both
`/docs/guides/mcp-server-setup` and
`/docs/guides/external-agent-registration`
- HTTP HEAD on old `docs.molecule.ai` → 000 (NXDOMAIN)
All template docs URLs now point at `doc.moleculesai.app`.
## Verification
- `go build ./...` clean
- `go test ./internal/handlers/... -count=1` green
- `pnpm test` → 1291/1291 pass (unchanged)
- `tsc --noEmit` clean
- 219 LOC removed (canvas duplicate UI), 69 LOC added (snippet help)
- Net `-150 LOC` while gaining the agent-readable help
## Out of scope (deferred, captured in followups)
- One blog post still has `canonical: "https://docs.molecule.ai/blog/..."`
in `src/app/blog/2026-04-20-chrome-devtools-mcp/page.mdx` — separate
blog-content fix.
- Comment in `theme-provider.tsx` references `docs.moleculesai.app`
(with `s`) — comment-only, not a runtime URL.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
User-reported friction: pip install molecule-ai-workspace-runtime on a
3.10 interpreter fails with "Could not find a version that satisfies the
requirement (from versions: none)" — pip's requires_python filter
silently drops the only available artifact before attempting install,
so the error doesn't mention Python at all. Operators see
"package missing", file a bug, and chase a phantom CDN/visibility
issue.
Two changes mirror the requirement at the two operator-touch surfaces:
1. workspace-server/internal/handlers/external_connection.go:
the externalUniversalMcpTemplate snippet (rendered into the
canvas Connect-External-Agent modal) now leads with a brief
"Requires Python >= 3.11" block + diagnostic + upgrade paths.
2. docs/workspace-runtime-package.md: same callout at the top of
the doc, before the Overview, so anyone landing here from search
gets the answer immediately.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
