**Stacked on #3025** (its commit is the parent here) — that PR fixes two
producers of a dock/plugin-rendered `TaskCard`, and this adds the
coverage for the second one.
## The gap
#3025 correctly fixes **both** producers, which is the Surface
Enumeration discipline working. Its test covers only `MainContent`.
Measured by deleting the identical line from `useRightDockController`:
```
MainContent.graph-popout 6 passed
RightDock 33 passed
TaskCard.host-inventory 1 passed
```
All green with the dock's wiring gone. I checked every suite that
touches that hook; none observes the prop.
Its own test comment says:
> REVERT CHECK: drop `taskColumnFlags` from **either** `renderTaskCard`
and this reads "none".
For this producer that is not true, and it is the producer that draws
cards into the **right dock**, where an operator actually sees them. So
the pair could quietly become a single again with every test still
green.
## The test
| state | result |
|---|---|
| #3025 as merged | 2/2 pass |
| delete the dock's `taskColumnFlags={…}` line | **1 failed / 1 passed**
|
Driven through the real `renderTaskCard`, captured off the `renderProps`
the controller hands `RightDock` — it is not on the returned controller
object. `RightDock` itself is stubbed so the assertion cannot fail for
unrelated dock plumbing.
The paired negative asserts an unresolved task receives `undefined`
rather than a fabricated object. That direction matters: inventing flags
would make a card claim traits its board never declared, which is worse
than the legacy fallback it replaces — the same *report, don't guess*
reasoning as #2999's `!target` refusal.
## One harness note
My first mock replaced `../RightDock` wholesale and the hook died on `No
"readStoredRightDockOpen" export is defined on the mock` — the
controller imports its persistence helpers from that module. Spreading
`importOriginal()` and overriding only the two components fixes it.
Recorded in the file because the next person stubbing this module will
hit the same thing.
**Verified:** 2/2, `tsc -p tsconfig.app.json` 0 errors in the new file,
lint clean, FNXC gate exit 0.
If #3025 lands first this rebases to a single test commit; if the two
are taken together the stack applies as-is.
---------
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
b2d4813410