feat(FR-2867): add unified memory accelerator UX in Resource Allocation

[yomybaby]

Resolves #7358(FR-2867)

Summary

Adds Resource Allocation UX for unified memory architecture accelerator slots (slot name suffix .unified, e.g. cuda.unified) in the Session Launcher.

When the selected accelerator slot is .unified:

• The accelerator-memory input/slider is disabled — users cannot edit it directly.
• Its value mirrors the host memory (mem) slider, converted into the slot's reported display_unit (falls back to GiB when the unit is not available).
• An info note is rendered under the accelerator field: "Accelerator memory is shared with host memory on this device and cannot be set separately."

For regular discrete accelerator slots (no .unified suffix), behavior is unchanged.

Identification keys off the slot-name suffix only, so the convention generalizes beyond cuda.unified to any future unified-memory accelerator family.

Approach

The first revision used a useEffect watching mem and writing to ['resource', 'accelerator']. Review feedback pointed out two problems with that shape: ordering races against preset/image effects, and a submit-time lag risk. This revision drops the watcher effect in favor of event-driven writes:

• When the host mem onChange fires and the active accelerator slot is .unified, the accelerator value is written in the same callback.
• When the accelerator-type onChange fires:
  • Switching INTO a .unified slot writes the current mem-derived value.
  • Switching OUT to a discrete slot resets accelerator to that slot's min (no stale GiB number left behind).
• The accelerator Form.Item already lists ['resource', 'mem'] in dependencies, so the field re-renders when mem changes; disabled is true while .unified.

There is no parallel state to keep in lockstep — the form value is the single source of truth, written once at the moment either input changes.

The slot's display_unit (e.g. GiB, MiB, TiB) is mapped to the binary-size prefix consumed by convertToBinaryUnit. If display_unit is missing or unrecognized, the value falls back to GiB.

Changes

• react/src/components/SessionFormItems/ResourceAllocationFormItems.tsx
  • Exported helper isUnifiedAcceleratorSlot(slotName).
  • Exported helpers displayUnitToInputSizeUnit and getUnifiedAcceleratorValueFromMem.
  • Event-driven writes in mem InputNumber onChange and accelerator-type BAISelect onChange.
  • Form.Item extra info note when .unified is selected; slider/input disabled in that mode.
• react/src/components/SessionFormItems/ResourceAllocationFormItems.test.ts
  • Unit tests for isUnifiedAcceleratorSlot (matches .unified, rejects discrete including cuda.mem, handles nullish).
• resources/i18n/en.json
  • New key session.launcher.UnifiedAcceleratorMemoryNote (English source; translations follow via the i18n pass).

Verification Results

• Relay: PASS
• Lint: PASS
• Format: PASS
• TypeScript: PASS for the touched file. Pre-existing failures on main in 9 unrelated files are not introduced by this PR.
• Tests: PASS (868 tests / 40 files in react/).

Out of scope (separate follow-up)

• Resource Preset / resource display rendering for .unified slots — tracked in FR-2868. Surfaces such as ResourceNumber.tsx, ResourcePresetSelect.tsx, ResourcePresetList.tsx, MyResource.tsx, and session/service detail displays still render accelerator memory independently for unified slots; folding those into a single combined display is out of scope here.
• Filtering / hinting based on whether the Resource Group has unified-memory agents available (depends on a backend matching/query API).
• Rewriting the legacy "2× GPU memory in RAM" tooltip when .unified is selected.

Test plan

• Select a .unified accelerator type in Session Launcher → accelerator-memory slider is disabled
• Change the host memory slider → accelerator-memory value mirrors it, expressed in the slot's display_unit
• Switch back to a discrete accelerator type → slider becomes editable and resets to the discrete slot's min (no stale GiB number)
• Info note appears below the accelerator field in unified mode and is absent in discrete mode
• Submit a session with a .unified accelerator and verify accelerator value equals mem (in the slot's unit)

[yomybaby]

• feat(FR-2867): add unified memory accelerator UX in Resource Allocation #7360 👈 (View in Graphite)
• main

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[github-actions]

Coverage Report for react-coverage (./react)

Status	Category	Percentage	Covered / Total
🔵	Lines	6.49%	1794 / 27604
🔵	Statements	5.34%	1990 / 37218
🔵	Functions	5.25%	300 / 5712
🔵	Branches	3.75%	1305 / 34753

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
react/src/components/SessionFormItems/ResourceAllocationFormItems.tsx	15.65%	10.42%	16.88%	15.16%	63, 160-1647, 1709

Generated in workflow #542 for commit 25d47b1 by the Vitest Coverage Report Action

[Copilot]

Pull request overview

Adds unified-memory accelerator UX to the Session Launcher’s Resource Allocation step by detecting accelerator slot names ending in .unified and enforcing “accelerator memory mirrors host memory” behavior with a localized info note.

Changes:

• Added unified-slot detection and unit conversion helpers, and updated Resource Allocation handlers to sync accelerator memory from mem and disable direct edits in unified mode.
• Added unit tests for .unified slot-name detection.
• Added an i18n string for the unified-memory info note (English).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
react/src/components/SessionFormItems/ResourceAllocationFormItems.tsx	Adds unified-slot detection/conversion helpers; disables accelerator slider/input in unified mode; syncs accelerator value from mem via event handlers; shows i18n note.
react/src/components/SessionFormItems/ResourceAllocationFormItems.test.ts	Adds tests for isUnifiedAcceleratorSlot behavior.
resources/i18n/en.json	Adds session.launcher.UnifiedAcceleratorMemoryNote English string.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.