fix: remove asset hash verification (#12061)

## Summary

This PR removes the `/api/assets/hash/:hash` verification path from
missing media/model detection.

I decided to remove this path for two reasons:

1. The Cloud runtime implementation and the OpenAPI/generated FE
contract do not agree on the hash format that this endpoint represents.
In current Cloud data, the dominant asset_hash shape is
<64-hex>.<extension> (for example, abc123....png), while the
OpenAPI/generated FE contract expects a blake3:<hash> style value. That
makes this path either dead code that should never be reached, or, when
it is reached, a request that always returns 400 and only adds
unnecessary noise.

2. Even if the format is reconciled, the Cloud implementation is a
global deduplication-oriented lookup, not an access-aware check for
whether the current workflow can use a resource. In theory, it can
return success for another user's personal asset, so it is the wrong
primitive for missing asset detection.

Because of that, this PR makes the existing asset list/store based
checks the primary verification path and removes the hash-specific
helpers, service method, and tests.

## Known follow-ups

These are known issues that are intentionally not solved in this PR:

1. Published assets are not exposed through
`/api/assets?...include_public=true`. This is a backend issue and can
still cause mismatch between missing-asset detection and resources that
preview/run successfully.
2. Shared workflow import has an ordering issue. The API contract issue
is being hotfixed separately under FE-603.
3. Annotated media paths can still be detected incorrectly.

I will prepare follow-up PRs for these, starting with the annotated
media path issue because that is the most critical frontend-side gap.

## Validation

- `pnpm exec vitest run
src/platform/assets/services/assetService.test.ts
src/platform/missingMedia/missingMediaScan.test.ts
src/platform/missingModel/missingModelScan.test.ts`
- `pnpm lint:unstaged`
- `pnpm typecheck`
- `pnpm knip`

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-12061-fix-remove-asset-hash-verification-3596d73d365081a088f8dfc874724c1d)
by [Unito](https://www.unito.io)

src/platform/missingModel/missingModelScan.ts

@@ -24,11 +24,6 @@ import {
 } from '@/utils/graphTraversalUtil'
 import { LGraphEventMode } from '@/lib/litegraph/src/types/globalEnums'
 import { resolveComboValues } from '@/utils/litegraphUtil'
-import type { AssetHashStatus } from '@/platform/assets/services/assetService'
-import {
-  assetService,
-  toBlake3AssetHash
-} from '@/platform/assets/services/assetService'
 
 export type MissingModelWorkflowData = FlattenableWorkflowGraph & {
   models?: ModelFile[]
@@ -450,16 +445,10 @@ interface AssetVerifier {
   getAssets: (nodeType: string) => AssetItem[] | undefined
 }
 
-type AssetHashVerifier = (
-  assetHash: string,
-  signal?: AbortSignal
-) => Promise<AssetHashStatus>
-
 export async function verifyAssetSupportedCandidates(
   candidates: MissingModelCandidate[],
   signal?: AbortSignal,
-  assetsStore?: AssetVerifier,
-  checkAssetHash: AssetHashVerifier = assetService.checkAssetHash
+  assetsStore?: AssetVerifier
 ): Promise<void> {
   if (signal?.aborted) return
 
@@ -468,52 +457,10 @@ export async function verifyAssetSupportedCandidates(
   )
   if (pendingCandidates.length === 0) return
 
-  const pendingNodeTypes = new Set<string>()
-  const candidatesByHash = new Map<string, MissingModelCandidate[]>()
-
-  for (const candidate of pendingCandidates) {
-    const assetHash = getBlake3AssetHash(candidate)
-    if (!assetHash) {
-      pendingNodeTypes.add(candidate.nodeType)
-      continue
-    }
-
-    const hashCandidates = candidatesByHash.get(assetHash)
-    if (hashCandidates) hashCandidates.push(candidate)
-    else candidatesByHash.set(assetHash, [candidate])
-  }
-
-  await Promise.all(
-    Array.from(candidatesByHash, async ([assetHash, hashCandidates]) => {
-      if (signal?.aborted) return
-
-      try {
-        const status = await checkAssetHash(assetHash, signal)
-        if (signal?.aborted) return
-
-        if (status === 'exists') {
-          for (const candidate of hashCandidates) {
-            candidate.isMissing = false
-          }
-          return
-        }
-      } catch (err) {
-        if (signal?.aborted || isAbortError(err)) return
-        console.warn(
-          '[Missing Model Pipeline] Failed to verify asset hash:',
-          err
-        )
-      }
-
-      for (const candidate of hashCandidates) {
-        pendingNodeTypes.add(candidate.nodeType)
-      }
-    })
+  const pendingNodeTypes = new Set(
+    pendingCandidates.map((candidate) => candidate.nodeType)
   )
 
-  if (signal?.aborted) return
-  if (pendingNodeTypes.size === 0) return
-
   const store =
     assetsStore ?? (await import('@/stores/assetsStore')).useAssetsStore()
 
@@ -544,20 +491,6 @@ export async function verifyAssetSupportedCandidates(
   }
 }
 
-function getBlake3AssetHash(candidate: MissingModelCandidate): string | null {
-  if (candidate.hashType?.toLowerCase() !== 'blake3') return null
-  return toBlake3AssetHash(candidate.hash)
-}
-
-function isAbortError(err: unknown): boolean {
-  return (
-    typeof err === 'object' &&
-    err !== null &&
-    'name' in err &&
-    err.name === 'AbortError'
-  )
-}
-
 function normalizePath(path: string): string {
   return path.replace(/\\/g, '/')
 }