[BUG] QdrantVectorStore Bad request: Index required but not found for pathSegments.5

[rossdonald]

Problem (one or two sentences)

ERR [Extension Host] [QdrantVectorStore] Failed to delete points by file paths:
Bad request: Index required but not found for "pathSegments.5" of one of the following types: [keyword].
Help: Create an index for this key or use a different filter.

The Qdrant collection only has indexes for pathSegments.0 through pathSegments.4 (5 indexes), but the file path being deleted has 6 segments, requiring pathSegments.5.

Cause:

• In _createPayloadIndexes() the loop creates indexes for 5 segments
• The file webview-ui\src\i18n\locales\hi\welcome.json has 6 path segments
• Qdrant requires a keyword index for any field used in a filter, so the delete operation fails

Context (who is affected and when)

Users using codebase indexing

Reproduction steps

Index a file with a path with greater than 5 parts e.g.
c:\repos\Roo-Code\webview-ui\src\i18n\locales\hi\welcome.json

Expected result

No error

Actual result

An error

Variations tried (optional)

No response

App Version

3.38.0

API Provider (optional)

None

Model Used (optional)

No response

Roo Code Task Links (optional)

No response

Relevant logs or errors (optional)

{
    "error": "Bad Request",
    "status": 400,
    "details": {
        "status": {
            "error": "Bad request: Index required but not found for \"pathSegments.5\" of one of the following types: [keyword]. Help: Create an index for this key or use a different filter."
        },
        "time": 0.000025748
    },
    "collection": "ws-b6546aa926a1d2e0",
    "fileCount": 1,
    "samplePaths": [
        "c:\\repos\\Roo-Code\\webview-ui\\src\\i18n\\locales\\hi\\welcome.json"
    ]
}

[roomote]

I've analyzed this issue and here's my proposed implementation plan:

Root Cause

In src/services/code-index/vector-store/qdrant-client.ts, the _createPayloadIndexes() method only creates indexes for pathSegments.0 through pathSegments.4 (5 indexes total):

// Line 316
for (let i = 0; i <= 4; i++) {

When deletePointsByMultipleFilePaths() attempts to filter by path segments for files with more than 5 segments, Qdrant requires an index for each segment used in the filter. The example path webview-ui/src/i18n/locales/hi/welcome.json has 6 segments, requiring pathSegments.5 which does not exist.

Proposed Fix

Increase the path segment index limit from 5 to 15 in the _createPayloadIndexes() method:

// Change from: for (let i = 0; i <= 4; i++)
for (let i = 0; i <= 14; i++) {

This will support file paths up to 15 directory levels deep, which should be sufficient for virtually all project structures while keeping the index overhead reasonable.

Additional Considerations

1. Add a constant to make this limit configurable/documentable
2. Add a test case to verify the fix works for deep paths
3. Users with existing collections may need to re-index to get the new indexes (this happens automatically when initialize() calls _createPayloadIndexes())

Please mention @roomote in a comment saying that you approve this plan, and I'll proceed with the implementation.