Function syncFtsIndex

syncFtsIndex(
    vault: Vault,
    idx: FtsIndex,
    opts?: { mode?: FtsSyncMode },
): Promise<FtsSyncReport>
Incrementally synchronize Markdown notes into an opened FTS5 index.

Product startup uses the default fail-soft mode so one unreadable note does not take down the server. Evidence-producing benchmarks pass strict, which aborts on the first read/index failure or zero-chunk note and verifies the final source_state/physical-row equations before returning.
Parameters
- vault: Vault
  Vault whose visible Markdown notes form the live source set.
- idx: FtsIndex
  Open FTS index to update and, in strict mode, physically audit.
- opts: { mode?: FtsSyncMode } = {}
  - Optionalmode?: FtsSyncMode
    
    Error policy; defaults to "fail-soft".
Returns Promise<FtsSyncReport>
Raw counters. Strict mode also returns the full physical audit and manifest; fail-soft mode marks audited:false, leaves audit counters at zero, and returns a null manifest to avoid an O(all rows) startup scan.
Throws
In strict mode when a file cannot be indexed or the final audit is incomplete.
Example
```
const report = await syncFtsIndex(vault, index, { mode: "strict" });
if (!report.complete) throw new Error("incomplete FTS index");
```
- Defined in src/fts5.ts:3032