ComfyUI-Lora-Manager/docs/plans/other-models-page.md

Plan: "Other Models" Page — Unified Management for VAE / Upscaler / Text Encoder / etc.

Status: v2 — Phase 1 implemented (2026-09-12, commits 27da7b3c backend + fa7ce725 frontend; verified live against a running ComfyUI instance: scan/hash/sub_type-derivation/fetch/previews all green). Phase 2 implemented (2026-09-12, per §9 design; full pytest + vitest green). Phase 3 implemented (§11: opt-in management toggles; default off). i18n done (2026-09-13): all 36 new keys translated in the 9 non-English locales — the [TODO: Translate] placeholders left by the sync script during development are gone (see docs/i18n-translation-guidelines.md §2, "Other Models feature"). Default set revised (pre-release): only vae / upscaler / text_encoder are managed by default — clip_vision and controlnet are both opt-in (§2, §11.1.1). Scope (Phase 1): scan + manage (list, search, filter, tags, folders, preview, rename, move, delete/exclude, CivitAI metadata fetch) for a new model type other, exposed as a new web page. Phase 2 (§9): one-click download from CivitAI for these types.

1. Goal

Today the manager supports three model types:

page	model_type	sub_types
/loras	lora	lora, locon, dora
/checkpoints	checkpoint	checkpoint, diffusion_model
/embeddings	embedding	embedding

Add a fourth page that manages "everything else" — VAE, upscalers, text encoders / CLIP, CLIP vision, optionally ControlNet — with a folder→sub_type mapping table so new ComfyUI folder categories can be added later by configuration, not code.

2. Locked Decisions

1. Architecture: one scanner + one service + one page, sub_type derived by location. Replicates the checkpoint pattern (CheckpointScanner aggregates checkpoints + unet roots and derives checkpoint vs diffusion_model from the root containing the file, py/services/checkpoint_scanner.py:384-415). One OtherScanner aggregates all enabled folder roots; resolve_sub_type_for_path() maps each root to a sub_type. No per-category scanners.

2. Naming: internal model_type = "other", route prefix /other, page id other.

   • misc is rejected: py/routes/misc_routes.py already owns that name for system/settings routes (/api/lm/settings, /api/lm/doctor/*).
   • components is rejected: templates/components/ and static/js/components/ directories would make components.html / components.js confusing neighbors.
   • other matches CivitAI's Other fallback type semantics. The display name is an i18n string (other.title, e.g. "Other Models") and can be renamed later without touching code.

3. sub_type values: snake_case, aligned with CivitAI ModelType semantics:

   sub_type	ComfyUI folder_paths key(s)	CivitAI ModelType	enabled by default
   vae	vae	VAE	yes
   upscaler	upscale_models	Upscaler	yes
   text_encoder	text_encoders, clip (legacy)	TextEncoder (CLIP is retired upstream)	yes
   clip_vision	clip_vision	CLIPVision	no (mapping present, opt-in)
   controlnet	controlnet	Controlnet	no (mapping present, opt-in)

   New folder categories = one line in the mapping table (see §4.1).

   Why only three are on by default (revised in Phase 3, before release): VAE, upscalers and text encoders are dependency-style assets every pipeline needs, and "which one am I actually using" is the recurring problem they solve. clip_vision and controlnet are workflow-driven instead (IPAdapter/SVD image conditioning; per-workflow ControlNet variants), and ControlNet libraries routinely run to dozens of files, so both are treated symmetrically as opt-in. Enumerating all five as "the default set" was not defensible on demand breadth alone.

4. Phase 1 = scan/manage only. Downloads from CivitAI (download_manager.py type mapping, default-root settings keys, download routing) are Phase 2 (§9). CivitAI metadata fetch for existing files IS in Phase 1 (hash-based lookup is type-agnostic; only the type-validation hook needs new values).

5. Out of scope (default off, revisit later): usage statistics buckets, recipe matching (recipe_scanner.py only merges lora+checkpoint scanners), statistics page, embeddings re-classification (stays its own page — merging would be a breaking change).

3. Why This Works With Minimal Churn

• ModelScanner (py/services/model_scanner.py:93) is specialized entirely via constructor params (model_type, model_class, file_extensions) + optional hooks (adjust_metadata, adjust_cached_entry, resolve_sub_type_for_path, model_scanner.py:1429-1443).
• BaseModelService subclasses can be one method (EmbeddingService implements only format_response, py/services/embedding_service.py:12).
• Routes: ModelServiceFactory.register_model_type() (py/services/model_service_factory.py:120-136) + COMMON_ROUTE_DEFINITIONS (py/routes/model_route_registrar.py:23-149) generate the full /api/lm/{prefix}/* surface (~50 endpoints) plus the GET /{prefix} page route.
• PersistentModelCache (py/services/persistent_model_cache.py:526-606) is a single models table keyed (model_type, file_path) with model_type as free text — zero schema change.
• Frontend apiConfig.js (static/js/api/apiConfig.js:51) generates all endpoints from the model-type string; ModelCard.js:670-675 renders the sub_type badge from data; the checkpoints page already demonstrates the "one page, multiple sub_types" filter (header.html:298).

4. Backend Changes

4.1 New constants — py/utils/constants.py

# folder_paths key -> sub_type; single source of truth for extensibility
OTHER_MODEL_FOLDER_SUBTYPES = {
    "vae": "vae",
    "upscale_models": "upscaler",
    "text_encoders": "text_encoder",
    "clip": "text_encoder",        # legacy ComfyUI key
    "clip_vision": "clip_vision",
    "controlnet": "controlnet",
}
DEFAULT_OTHER_MODEL_FOLDERS = ("vae", "upscale_models", "text_encoders", "clip", "clip_vision")
VALID_OTHER_SUB_TYPES = ["vae", "upscaler", "text_encoder", "clip_vision", "controlnet"]
# CivitAI model.type values accepted for this page (fetch-metadata validation)
VALID_OTHER_CIVITAI_TYPES = {"vae", "upscaler", "textencoder", "clipvision", "controlnet", "other"}

Also extend CIVITAI_USER_MODEL_TYPES (constants.py:90) if user-model queries should include these types.

4.2 New files (mirror the embedding/checkpoint implementations)

1. py/utils/models.py — add OtherModelMetadata(BaseModelMetadata): default sub_type="vae" placeholder overridden by scanner hook; from_civitai_info mapping CivitAI types → our sub_types (TextEncoder→text_encoder, CLIPVision→clip_vision, Upscaler→upscaler, VAE→vae, Controlnet→controlnet, else other-ish fallback to folder-derived sub_type).
2. py/services/other_scanner.py — OtherScanner(ModelScanner):
   • model_type="other", extensions: reuse the checkpoint set (safetensors/pt/pt2/bin/pth/pkl/sft/gguf).
   • get_model_roots(): iterate OTHER_MODEL_FOLDER_SUBTYPES ∩ enabled keys, pull each from config (§4.3); dedupe; build root → sub_type map (normalized abspaths; multiple keys may share a sub_type).
   • Implement all three hooks like CheckpointScanner (checkpoint_scanner.py:384-415): resolve_sub_type_for_path by longest-prefix root match, adjust_metadata, adjust_cached_entry (sub_type is re-derived on cache load, never persisted).
   • Lazy hashing, checkpoint-style: text encoders (T5-XXL ≈ 10 GB) make eager sha256 painful. Copy the hash_status="pending" + singleflight calculate_hash_for_model pattern from CheckpointScanner.
3. py/services/other_model_service.py — OtherModelService(BaseModelService), format_response only (no usage_count, like EmbeddingService).
4. py/routes/other_routes.py — OtherRoutes(BaseModelRoutes), template_name="other.html", hooks:
   • _validate_civitai_model_type → VALID_OTHER_CIVITAI_TYPES
   • _get_expected_model_types, _parse_specific_params (no type-specific download params in Phase 1)
   • initialize_services() on app.on_startup pulling ServiceRegistry.get_other_scanner().

4.3 py/config.py

• New other_roots property: for each enabled key in OTHER_MODEL_FOLDER_SUBTYPES, folder_paths.get_folder_paths(key) (plugin mode) — standalone mode needs nothing new: MockFolderPaths (standalone.py:66-105) already serves arbitrary keys from settings.json.folder_paths.
• Follow the existing per-type recipe: an _prepare_other_paths() (dedupe + symlink registration; also cross-scanner overlap detection — warn if an other root is already covered by checkpoints/unet/embedding roots, mirroring the checkpoint/unet overlap check).
• Wire into: _apply_library_paths, _symlink_roots(), _rebuild_preview_roots() (hard requirement — preview images are served per registered root), save_folder_paths_to_settings().

4.4 Existing-file edits (the "type string scatter" — each is a small branch/entry)

file	change
py/services/model_service_factory.py:120	register ("other", OtherModelService, OtherRoutes) in register_default_model_types()
py/services/service_registry.py	add get_other_scanner() (mirror :297 get_embedding_scanner)
py/services/model_scanner.py:67	PAGE_TYPE_MAP['other'] = 'other' (WebSocket progress)
py/services/base_model_service.py:896-906	get_model_types() branch → VALID_OTHER_SUB_TYPES
py/lora_manager.py	_initialize_services scanner task list (:219-242), _cleanup cancel list (:463), _cleanup_backup_files roots (:327-330)
py/routes/handlers/misc_handlers.py	scanner_getters (:657-661) + scanner_factories (:757-759) so Doctor / init-status / refresh-all see the new scanner
py/services/pending_delete_service.py	_PAGE_TYPE map (:57-61) + scanner getter list (:983-985)
py/metadata_ops/__init__.py:36-38	SCANNER_TYPE_MAP['other']
settings.json.example	document optional folder_paths keys: vae, upscale_models, text_encoders, clip_vision

Explicitly NOT touched in Phase 1: py/services/download_manager.py, py/services/download_routing.py, py/services/settings_manager.py default-root keys, py/routes/stats_routes.py, py/utils/usage_stats.py, py/services/recipe_scanner.py, py/metadata_collector/, py/nodes/.

Zero-change confirmations (verified): PersistentModelCache, ModelUpdateService, DownloadedVersionHistoryService, MetadataSyncService + provider chain (type-agnostic hash lookups), ModelFileService / ModelMoveService / ModelLifecycleService (scanner + model_type injected), ModelCache / ModelHashIndex, AutoV3BackfillService.

5. Frontend Changes

1. static/js/api/apiConfig.js — MODEL_TYPES.OTHER = 'other'; MODEL_CONFIG.other entry (displayName, singularName, supportsMove, supportsBulkOperations; no letter filter); endpoints come free from getApiEndpoints() (:51).
2. static/js/api/otherApi.js — thin OtherApiClient extends BaseModelApiClient (mirror embeddingApi.js); register in modelApiFactory.js.
3. static/js/other.js — page entry (mirror embeddings.js): appCore.initialize() + createPageControls('other') + initializePageFeatures() + ModelDuplicatesManager + initActiveFiltersSync('other').
4. Controls & context menu — OtherControls extends PageControls and OtherContextMenu (start from the embedding variants — the smallest); add branches in the two factories (components/controls/index.js:15, components/ContextMenu/index.js:15). Context-menu template block lives in templates/other.html ({% block additional_components %}, the checkpoints/embeddings pattern — do NOT touch the shared context_menu.html).
5. templates/other.html — copy embeddings.html: same content blocks (controls + breadcrumb + duplicates banner + folder sidebar + #modelGrid), data-page="other", main script /loras_static/js/other.js.
6. templates/components/header.html — nav entry (:23-43, active when request.path.startswith('/other')); enable the modelTypes sub_type filter panel for other (:298-305 pattern from checkpoints); check search-options panel conditions (:199-224).
7. static/js/utils/constants.js — MODEL_SUBTYPE_ABBREVIATIONS (:115): vae→VAE, upscaler→UPS, text_encoder→TE, clip_vision→CV, controlnet→CN; matching MODEL_SUBTYPE_DISPLAY_NAMES (:99). (Unknown fallback already uppercases 4 chars, but explicit mappings read better.)
8. static/js/core.js:110 getPageType() — verify data-page="other" flows through state.pages generically; add only if the page list is enumerated anywhere.
9. No change to web/comfyui/top_menu_extension.js (it opens /loras; page-to-page nav is the header bar).

6. i18n

• locales/en.json: add other.title (e.g. "Other Models") + minimal other.contextMenu.* / other.modelTypes.* keys; reuse modelCard.*, loras.contextMenu.*, common.* wherever possible (the established pattern — checkpoints/embeddings already reuse lora keys).
• Run python scripts/sync_translation_keys.py; leave [TODO: Translate] placeholders in other locales (per docs/i18n-translation-guidelines.md §7 — do not translate proactively).

7. Testing

Follow existing conventions (pytest.ini, tests/frontend/ vitest):

1. Backend (pytest, async where needed):
   • OtherScanner root aggregation + resolve_sub_type_for_path (file under vae/ root → vae; text_encoders and legacy clip both → text_encoder; disabled controlnet root not scanned).
   • Cache round-trip: sub_type re-derived via adjust_cached_entry (not persisted).
   • Lazy hash: hash_status="pending" default; calculate_hash_for_model singleflight.
   • OtherRoutes registration smoke test: /api/lm/other/... endpoints exist; _validate_civitai_model_type accepts vae/upscaler/textencoder, rejects lora.
   • Config: other_roots in both modes (mock folder_paths, and standalone settings.json.folder_paths).
2. Frontend (vitest + jsdom, tests/frontend/):
   • apiConfig: getApiEndpoints('other') URL shapes; modelApiFactory returns the Other client.
   • ModelCard badge rendering for new sub_types.
   • createPageControls('other') / createPageContextMenu('other') factories.
3. Manual UI verification by the user (per AGENTS.md — no sandbox/browser automation): page loads, scans a real library, sub_type filter + badges, context menu actions.

8. Execution Order

1. constants.py + OtherModelMetadata + config.py roots
2. OtherScanner (+ registry, factory, PAGE_TYPE_MAP) → scanner unit tests green
3. OtherModelService + OtherRoutes + handler/registrar wiring + lora_manager.py lifecycle → route tests green
4. Doctor/pending-delete/metadata-ops scatter entries
5. Template + header nav + frontend API/controls/context-menu/card badges → vitest green
6. i18n keys + sync script
7. pytest + npm test full runs; hand to user for manual UI check

9. Phase 2 Detailed Design — CivitAI Downloads for other

Designed 2026-09-12 against the Phase-1 code on this branch; decisions marked [locked] follow the same recommendations the feature owner approved for Phase 1.

9.1 Download pipeline touch points

Flow: POST /api/lm/download-model (py/routes/model_route_registrar.py:104; GET variant :105 for the browser extension) → ModelDownloadHandler.download_model (model_handlers.py:1740) → DownloadModelUseCase.execute → DownloadCoordinator.schedule_download → DownloadManager.download_from_civitai (download_manager.py:386) → _execute_original_download (:1415). Inside, seven scatter points need an other branch:

1. Type map (:1496-1507): accept model.type.lower() in VALID_OTHER_CIVITAI_TYPES → model_type = "other" (reuses the Phase-1 set, incl. "other" itself).
2. Early version-exists gate (:1436-1463): add other_scanner.check_model_version_exists.
3. File-level exists gate (:1640-1655 → _find_local_file_entry :320-346 → _get_scanner_for_model_type :230-236): add explicit other branch. Trap: the function currently falls through to the lora scanner for unknown types — "other" would silently dedupe against loras. Also narrow the fall-through to "lora" only / raise on unknown.
4. Version-level fallback gate (:1656-1688): add elif model_type == "other".
5. Default-root selection (:1690-1727): for other, first resolve sub_type (§9.2), then read default_other_roots[sub_type] (§9.3); if sub_type is undecidable or no default root configured → error guiding the user to pick a folder explicitly.
6. Metadata class selection (:1909-1928) + _build_metadata_for_resume (:969-981): add OtherModelMetadata.from_civitai_info branches.
7. Post-download cache write (_execute_download_pipeline :2622-2679): add other scanner branch; adjust_metadata re-derives sub_type from the on-disk root automatically. _get_supported_extensions_for_type (:2720-2744): other reuses the checkpoint extension set.

Hooks: _record_downloaded_version_history (model_type is free text — zero change); _sync_downloaded_version (:1984 → scanner dispatch :2130-2135) add other; py/utils/example_images_download_manager.py scanner dispatch at :411-421, :591-601, :1089+ — add other at all three (silent no-scanner otherwise).

Path templates: get_download_path_template("other") is unset, so other resolves to a flat layout (empty template) — downloads land directly under the resolved sub_type root. This is deliberate: other-model roots are already split per sub_type (default_other_roots), and priority_tags has no other entry, so {first_tag} would fall back to an arbitrary CivitAI tag and scatter files into unstable folders. Users who want nesting can still set download_path_templates["other"] in settings.json. See DEFAULT_DOWNLOAD_PATH_TEMPLATES (py/utils/constants.py) and DEFAULT_PATH_TEMPLATES (static/js/utils/constants.js).

9.2 File-level routing (model.type / file.type → sub_type) [locked]

Table-driven, mirroring Phase 1. New in py/utils/constants.py:

CIVITAI_FILE_TYPE_TO_OTHER_SUB_TYPE = {
    "VAE": "vae", "Upscaler": "upscaler", "Text Encoder": "text_encoder",
    "Vision Encoder": "clip_vision", "CLIPVision": "clip_vision",
    "ControlNet": "controlnet",
}

download_routing.py gains resolve_other_download_sub_type(civitai_model_type, file_types, selected_file_type=None) with fixed priority:

1. Explicit user file pick (file_params from #1058's _resolve_target_file) — if the picked file's type maps, it wins even when model.type is Checkpoint.
2. model.type via the existing CIVITAI_TYPE_TO_OTHER_SUB_TYPE (constants.py:120-127).
3. file.type fallback — only when model.type maps to nothing (e.g. model.type Other or retired CLIP). MUST NOT override a mapped model.type: checkpoint models routinely bundle VAE/Text Encoder component files, and unconditional file-type routing would misroute them.
4. Still undecidable → None; use_default_paths errors and the UI offers all other roots for manual selection.

HTTP: extend DownloadRoutingHandler.get_download_routing (download_routing_handlers.py:23) with an other branch returning {root_kind: "other", sub_type: ...}; add GET /api/lm/other/roots_by_subtype in OtherRoutes.setup_specific_routes (data from config._prepare_other_paths's per-key roots, aggregating text_encoders + legacy clip under text_encoder).

9.3 Settings: single dict key default_other_roots [locked]

Rejected: four flat keys (default_vae_root…) — each flat key costs ~13 touch points in settings_manager.py (defaults :82-85, _check_and_auto_set :890-895, set() :1621-1628, _update_active_library_entry :738-805, upsert/create signatures :1953-2132, _build_library_payload :552-612, _sync_active_library_to_root :519-547, three library constructors, frontend DEFAULT_SETTINGS_BASE), repeated per future sub_type.

Chosen: one mapping key default_other_roots: {sub_type: path}, copying the extra_folder_paths precedent (generic Mapping handling at :533-535, :573-578, :763-767). _check_and_auto_set generalizes to per-sub_type candidates (union over that sub_type's folder keys — text_encoder → text_encoders + clip). set() validates keys against VALID_OTHER_SUB_TYPES.

Also fix the Phase-1 omission: add "other_scanner" to _notify_library_change (:2150-2156) and _notify_model_name_display_change (:1795-1800) — otherwise switching libraries leaves the other page stale.

9.4 Settings UI

• templates/components/modals/settings/library.html:34-40: sub_type selectors after the existing four setting_selects (Jinja loop; controlnet selector only when enabled_other_folders includes it). Dict-subkey save helper saveOtherRootSetting(subType, value) alongside the flat saveSelectSetting.
• static/js/managers/SettingsManager.js:1547-1697: loadOtherRoots() mirroring loadUnetRoots(), fed by /api/lm/other/roots_by_subtype; current values from state.global.settings.default_other_roots. state/index.js:24 DEFAULT_SETTINGS_BASE += default_other_roots: {}.
• Optional: one other row in the download-path-template block (library.html:153-211).
• i18n: settings.folderSettings.* keys into locales/en.json + sync script; other locales keep [TODO: Translate].
• Settings GET (misc_handlers.py:1528-1536) already returns all non-sensitive keys — new key reaches the frontend for free.

9.5 Frontend download entry

• templates/components/controls.html:83: drop the page_id != 'other' exclusion on the download button (keyboard shortcut D self-enables via PageControls.js:196-198).
• OtherControls.js:22-55: add showDownloadModal: () => downloadManager.showDownloadModal() (mirror EmbeddingsControls.js:43-45).
• DownloadManager.js proceedToLocationContent (:955-1017): add _resolveOtherSubType() (mirror _resolveIsDiffusionModel :1026): selected file type → /api/lm/download/routing → otherApiClient.fetchModelRoots(subType) (new); default-root preselect reads default_other_roots[subType] instead of `default_${singularType}_root` (:974). Undecidable → list all other roots (/api/lm/other/roots) for manual pick; an explicit save_dir skips backend default-root logic, so the two paths cannot disagree.
• ModelVersionsTab download buttons are modelType-generic and already work via getModelApiClient('other'); context menu has no CivitAI download entry — no change.
• Version-list type validation (get_civitai_versions → _validate_civitai_model_type) already accepts VALID_OTHER_CIVITAI_TYPES from Phase 1.

9.6 CivitAI type mapping decisions [locked]

• Download accepts exactly VALID_OTHER_CIVITAI_TYPES (VAE, Upscaler, TextEncoder, CLIP, CLIPVision, Controlnet, Other) — reuse the Phase-1 tables; do NOT create new ones.
• Extend CIVITAI_USER_MODEL_TYPES (constants.py:133-137) with the 7 aliases, and point them at the other scanner / "other" history bucket in misc_handlers.py (type_scanner_map :2793-2797, downloaded_version_map :2821-2827) — otherwise creator pages silently filter these models while downloads claim support.
• Fix (small Phase-1 bug): OtherModelMetadata.from_civitai_info (py/utils/models.py:343) reads version_info.get("type"), but the type lives at version["model"]["type"] — the mapping never fires and always degrades to the placeholder. Read version_info.get("model", {}).get("type") instead. (CheckpointMetadata:290 has the same shape; leave it alone here.)

9.7 Tests

Existing base: tests/services/test_download_manager_basic.py (incl. test_download_rejects_unsupported_model_type :1336), test_download_manager_error.py, test_download_manager_concurrent.py, tests/integration/test_download_flow.py, tests/services/test_settings_manager.py; frontend tests/frontend/managers/downloadManager.routing.test.js, settingsManager.library.test.js.

Add: (1) resolve_other_download_sub_type unit tests — every priority tier, bundled-component anti-misrouting, undecidable → None, civarchive-shaped payload; (2) download_manager — six model.types accepted → other scanner (mock), unknown still rejected, no lora-scanner fall-through, per-sub_type default roots + unconfigured error, resume metadata, extension set; (3) settings_manager — default_other_roots defaults/auto-set (incl. text_encoder dual-key union)/library sync/upsert passthrough/illegal sub_type rejection; (4) routes — /api/lm/download/routing other branch, roots_by_subtype shape; (5) example-images dispatch accepts other (3 sites); (6) vitest — _resolveOtherSubType + root select + default preselect, loadOtherRoots; (7) user-models existsLocally for VAE.

9.8 Phase 2 file list

Backend: py/utils/constants.py, py/services/download_routing.py, py/routes/handlers/download_routing_handlers.py, py/services/download_manager.py, py/utils/example_images_download_manager.py, py/services/settings_manager.py, py/utils/models.py, py/routes/other_routes.py, py/routes/handlers/misc_handlers.py, settings.json.example. Frontend/templates: templates/components/controls.html, static/js/components/controls/OtherControls.js, static/js/managers/DownloadManager.js, static/js/api/otherApi.js, templates/components/modals/settings/library.html, static/js/managers/SettingsManager.js, static/js/state/index.js, locales/en.json + sync.

10. Risks / Open Questions

• Root overlap: a user may point text_encoders at a directory already scanned as checkpoints/unet. Realpath dedup inside one scanner won't catch cross-scanner overlap → the _prepare_other_paths overlap warning (§4.3) is the mitigation; duplicate cards across pages are cosmetic, not corrupting (cache keyed by (model_type, file_path)).
• Huge text encoders + lazy hash: CivitAI fetch for a pending-hash model must trigger on-demand hash like checkpoints do — verify that flow (calculate_hash_for_model) is reachable from the other routes' fetch-metadata handler.
• Retired CivitAI types: CLIP/CLIPVision are retired upstream (grandfathered for existing models); metadata fetch must tolerate both retired and current types — VALID_OTHER_CIVITAI_TYPES includes them deliberately.
• Standalone users must add the new folder_paths keys to settings.json themselves; document in settings.json.example and the feature doc.
• Page display name is i18n-only; if "Other Models" tests poorly, rename other.title without code changes.

Phase 2 risks

• Bundled component files: checkpoint models routinely ship VAE/Text Encoder component files — file.type routing must stay a fallback (or explicit user pick), never an override (§9.2 priority is load-bearing; test it).
• _get_scanner_for_model_type lora fall-through (download_manager.py:236): without an explicit other branch, dedupe checks run against the lora scanner — the most insidious trap in Phase 2.
• text_encoder dual folder keys (text_encoders + legacy clip): default-root candidates, roots_by_subtype, and auto-set must all merge both keys; miss one and the default-root dropdown comes up empty.
• Undecidable sub_type (model.type Other + unknown file types): must error and ask, never silently default to the vae folder.
• Lazy hash after download: downloads carry CivitAI SHA256 (no recompute needed) — ensure the post-download cache write doesn't leave hash_status="pending", or the next metadata fetch re-hashes a 10 GB file.
• CivArchive source: same _execute_original_download path, same payload shape — cover it once in tests.

11. Phase 3 — Opt-in Management Toggles (implemented)

Designed 2026-09-13 against the Phase-1/2 code. Other Models is opt-in: after Phase 3 the feature ships disabled, so no other-model folder is scanned and the page shows an "enable" empty state until the user turns it on.

11.1 Settings (global, not per-library)

key	type	default	meaning
enable_other_models	bool	false	master switch
enabled_other_sub_types	list[str]	["vae","upscaler","text_encoder"]	allow-list; clip_vision and controlnet are opt-in (see §2)

enabled_other_folders (the unreleased, additive, no-UI backend key) was removed and replaced by the sub_type-level allow-list; there is no migration because the feature never shipped. text_encoder expands to text_encoders + legacy clip via OTHER_SUB_TYPE_FOLDER_KEYS.

The default allow-list lives on five surfaces that must stay in sync: DEFAULT_ENABLED_OTHER_SUB_TYPES (py/utils/constants.py), DEFAULT_SETTINGS (py/services/settings_manager.py), the two DEFAULT_SETTINGS_BASE / createDefaultSettings lists (static/js/state/index.js), the updateOtherModelsControls() fallback (static/js/managers/SettingsManager.js) and the server-rendered Jinja fallback (templates/components/modals/settings/library.html).

11.1.1 Legacy key handling in Config._init_other_paths

ComfyUI's folder_paths rewrites legacy names before every access (clip → text_encoders, unet → diffusion_models) and registers both legacy directories under the canonical key, so get_folder_paths("clip") returns exactly the same list as get_folder_paths("text_encoders"). Querying both keys made the overlap guard fire twice with please fix your path configuration for a configuration the user cannot fix. Config._collapse_legacy_folder_keys() now drops a key when the host exposes map_legacy and resolves it to another queried key, and _prepare_other_paths() downgrades a same-sub_type duplicate to debug (a cross-sub_type collision still warns). In standalone mode MockFolderPaths has no map_legacy and its keys are independent settings.json entries, so every key is still queried there.

settings.json.example intentionally stays minimal (only use_portable_settings, civitai_api_key, and the four core folder_paths keys: loras, checkpoints, unet, embeddings). Optional keys — including the other-model folder paths and enable_other_models — are NOT documented there; they live in DEFAULT_SETTINGS and reach the user's settings.json on demand. This supersedes the Phase-1/Phase-2 notes that proposed adding the other-model folder keys to the example.

11.2 Behaviour matrix

state	scan	nav / /other	other downloads	default_other_roots	Doctor / refresh-all
master off	nothing (other_roots == [])	nav entry hidden (nav-item--hidden); /other still renders the disabled empty state + Enable button; one-time dismissible announcement banner on first visit	rejected	preserved, never auto-set	scanner skipped
sub_type off	that sub_type's folder keys excluded	page keeps working, type disappears from data	auto-routing refused (manual folder still allowed)	preserved, not preselected	normal
all on (after enabling)	Phase-1/2 behaviour	normal	normal	normal	normal

11.3 Backend touch points

• py/utils/constants.py — DEFAULT_ENABLED_OTHER_SUB_TYPES, OTHER_SUB_TYPE_FOLDER_KEYS, normalize_other_sub_types.
• py/config.py — _get_enabled_other_folder_keys() is the single scan gate (master switch + allow-list); new refresh_other_roots() rebuilds roots + preview roots on toggle.
• py/services/settings_manager.py — new defaults, set() normalization, is_other_models_enabled() / get_enabled_other_sub_types() / is_other_sub_type_enabled(), and _apply_other_model_settings_change() which reapplies config and calls other_scanner.on_library_changed(reconcile=True).
• py/services/model_scanner.py — _should_keep_cached_entry() hydration hook (default keep) plus on_library_changed(reconcile=...) / initialize_in_background(reconcile=...); the hook filters raw_data and the hash/autov3 index rows.
• py/services/other_scanner.py — drops persisted entries whose folder is no longer a managed root (sub_type is location-derived, so config is the source of truth).
• py/routes/other_routes.py — _validate_civitai_model_type rejects everything while off / mapped-but-disabled sub_types; _get_page_context_provider() injects other_disabled into the template.
• py/routes/handlers/model_handlers.py + base_model_routes.py — optional page_context_provider hook on ModelPageView.
• py/routes/handlers/download_routing_handlers.py — returns {sub_type: None, disabled: true, reason} instead of guessing.
• py/services/download_manager.py — rejects other-type downloads while off; disabled sub_type refuses default-path routing with a "pick a folder" error.
• py/routes/handlers/misc_handlers.py — Doctor / init-status / refresh-all skip the other scanner while off (_active_scanner_factories / _active_scanner_getters).
• py/services/pending_delete_service.py — deliberately untouched: the scanner stays registered so staged deletes still merge.

11.4 Frontend

Discoverability: the nav entry is hidden while the feature is off, and three lightweight surfaces replace it — a one-time announcement banner, the download toast, and the settings toggle itself.

• templates/components/header.html + static/css/components/header.css — nav-item--hidden class (server-rendered when off, client-toggled after enabling) and the fa-shapes icon.
• templates/other.html — other_disabled branch in content + main_script; page-scoped CSS for the empty state.
• static/js/other_disabled.js — boots appCore (shared header) and delegates to the shared enable helper.
• static/js/utils/otherModels.js — shared enableOtherModels() (POST settings + reload) and openOtherModelsSettings() (settings modal on the Library section); used by the disabled page, the banner and the download modal.
• static/js/managers/BannerService.js — other-models-announcement banner (only when off and not dismissed; priority: 0, dismissal persisted via dismissed_banners) with Enable / Open Settings actions; removeOtherModelsAnnouncement() drops it without persisting a dismissal.
• templates/components/modals/settings/library.html + SettingsManager.updateOtherModelsControls() / saveEnabledOtherSubTypes() / updateOtherModelsNavVisibility() — master toggle + five sub_type checkboxes; unchecked/disabled sub_types have their default-root select disabled.
• static/js/managers/DownloadManager.js — a disabled routing answer surfaces a showActionToast with an "Enable Other Models" action (opening settings) and falls back to manual selection.
• i18n: settings.folderSettings.*, other.disabled.* and banners.otherModels.* keys in locales/en.json + scripts/sync_translation_keys.py (other locales keep [TODO: Translate]).

11.5 Cache consistency

• Disabling purges rows from the in-memory view at hydration time (the _should_keep_cached_entry hook) and from SQLite on the reconcile triggered by the toggle; the .metadata.json sidecars survive, so re-enabling rescans without recomputing hashes (critical for multi-GB text encoders).
• Enabling triggers a reconcile so newly managed roots are scanned immediately.
• Editing settings.json while the server is stopped is still covered by the hydration hook, so disabled types never appear after a restart.

11.6 Tests

Backend: opt-in fixtures added to the other-related suites; new coverage for "default off scans nothing", per-sub_type gating, routing/download rejection, _should_keep_cached_entry, settings normalization and other_disabled page context. Frontend: updateOtherModelsControls / saveEnabledOtherSubTypes and the disabled-page enable flow.