diff --git a/docs/homelab-integration.md b/docs/homelab-integration.md
index 5104020..3a003b9 100644
--- a/docs/homelab-integration.md
+++ b/docs/homelab-integration.md
@@ -24,7 +24,9 @@ it** — endpoints and aliases drift, and this file is a snapshot (2026-06-06),
   `TAPIR_UPLOADS_ENABLED` (off by default), `TAPIR_UPLOAD_MAX_MB` (200), `TAPIR_UPLOAD_MAX_MINUTES`
   (90), `TAPIR_TRANSCRIBE_MODEL`, `TAPIR_TRANSCRIBE_FALLBACK_MODEL` (empty disables the cloud
   fallback), `TAPIR_TRANSCRIBE_TIMEOUT` (30m), `TAPIR_UPLOAD_TMP_DIR`, `TAPIR_FFMPEG_BIN`,
-  `TAPIR_FFPROBE_BIN`, `TAPIR_MAX_UPLOADED_TRANSCRIPT_CHARS` (120000). Needs `ffmpeg` + `ffprobe`
+  `TAPIR_FFPROBE_BIN`, `TAPIR_MAX_UPLOADED_TRANSCRIPT_CHARS` (90000 — the measured ceiling of
+  `iguana/gemma4-26b`, which silently drops the head above it), `TAPIR_UPLOAD_CHAT_MODEL`
+  (`iguana/gemma4-26b`; `koala/phi4-mini`'s 8,192-token context 400s on an hour of speech). Needs `ffmpeg` + `ffprobe`
   in the runtime image; Tapir's own ingress body limit for a 200 MB upload is unverified (infra).
 - **Auth key:** treat as a secret via the SecretStore port; do not hardcode in committed code.
   NOTE: the documented `sk-local-123` returned `401` on `30401/v1/models` (2026-06-02) — it is