Correct Core logging and knob caller documentation

Sources/TranscriptedCore/AGENTS.md

@@ -57,7 +57,7 @@ Run `find Sources/TranscriptedCore -name '*.swift'` for the live list. By folder
 
 ## Environment variables Core reads
 
-- `TRANSCRIPTED_LAB_KNOBS_FILE` is read once per process by `Utilities/LabKnobOverrides.swift`. It names a JSON object of hill-climb knob overrides. Unset (every normal run) means no file I/O. Only ids in `LabKnobOverrides.knownIDs` are honored: the four `diarization.*` knobs in `Services/DiarizationService.swift` and the four `speaker.cluster.*` thresholds in `Speaker/SpeakerEmbeddingThresholds.swift`. Anything else is warned about on stderr (ids only) and dropped. A new knob needs the call site, the id in `knownIDs`, and an entry in `config/hillclimb/knobs.json`. It is the only env var that changes pipeline math; don't add more unless a host seam can't do the job.
+- `TRANSCRIPTED_LAB_KNOBS_FILE` is read once per process by `Utilities/LabKnobOverrides.swift`. It names a JSON object of hill-climb knob overrides. Unset (every normal run) means no file I/O. Only ids in `LabKnobOverrides.knownIDs` are honored: the four `diarization.*` knobs in `Services/FluidAudioCompatibility.swift` and the four `speaker.cluster.*` thresholds in `Speaker/SpeakerEmbeddingThresholds.swift`. Anything else is warned about on stderr (ids only) and dropped. A new knob needs the call site, the id in `knownIDs`, and an entry in `config/hillclimb/knobs.json`. It is the only env var that changes pipeline math; don't add more unless a host seam can't do the job.
 - Lab-only, diarization: `TRANSCRIPTED_NEMOTRON_PRESET` and `TRANSCRIPTED_NEMOTRON_EMBEDDER=online` (below).
 
 ## Diarization backends

Sources/TranscriptedCore/Logging/AppLogger.swift

@@ -5,7 +5,7 @@ import OSLog
 ///
 /// Writes to both:
 /// 1. os.Logger (Console.app) — for human debugging
-/// 2. FileLogger (~/Library/Logs/Transcripted/app.jsonl) — for agent diagnostics
+/// 2. FileLogger (~/Library/Application Support/Transcripted/logs/app.jsonl by default) — for agent diagnostics
 ///
 /// Usage:
 ///   AppLogger.audioMic.info("Started", ["sampleRate": "\(format.sampleRate)"])

Sources/TranscriptedCore/Logging/FileLogger.swift

@@ -1,6 +1,7 @@
 import Foundation
 
-/// Writes structured log entries as JSON Lines to ~/Library/Logs/Transcripted/app.jsonl
+/// Writes structured log entries as JSON Lines to `app.jsonl` in `CoreStoragePaths.logs`
+/// (by default ~/Library/Application Support/Transcripted/logs/app.jsonl)
 ///
 /// Design decisions:
 /// - JSON Lines format: one JSON object per line, machine-parseable, grep-friendly

Sources/TranscriptedCore/Utilities/LabKnobOverrides.swift

@@ -32,7 +32,7 @@ public enum LabKnobOverrides {
     public static let environmentKey = "TRANSCRIPTED_LAB_KNOBS_FILE"
 
     /// Every knob id Core reads through this type. Keep in sync with the call
-    /// sites (DiarizationService.swift, SpeakerEmbeddingThresholds.swift) and
+    /// sites (FluidAudioCompatibility.swift, SpeakerEmbeddingThresholds.swift) and
     /// with config/hillclimb/knobs.json.
     public static let knownIDs: Set<String> = [
         "diarization.clustering_threshold",