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
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