POST /api/settings rebuilt runtime_settings.json from only the request
body, so a focused admin page that submits a single field wiped every
other persisted setting. The Middleware proxy tab (mitm_listen) and
detector table (pii_default_detectors), plus the MCP SetBranding tool
(instance_name/instance_tagline), all POST partial bodies; the
no-omitempty api_keys and pii_default_detectors fields even round-tripped
as JSON null.
Read the persisted settings and overlay only the fields the request set
(RuntimeSettings.MergeNonNil) before writing. Every field is a pointer, so
the reflection-based merge is total over the struct and any field added
later is preserved automatically. Absent or null fields are now kept;
clearing a setting is done by sending its explicit empty/zero value
(api_keys [], mitm_listen "", etc.), unchanged from before. The full
Settings page sends every field, so its Save behaves identically.
Assisted-by: Claude:claude-opus-4-8 Claude-Code
Signed-off-by: Richard Palethorpe <io@richiejp.com>
Adds a whitelabeling feature so an operator can replace the LocalAI
instance name, tagline, square logo, horizontal logo, and favicon from
the admin Settings page. Defaults fall back to the bundled assets so
existing installs are unaffected.
The public GET /api/branding endpoint is reachable pre-auth so the
login screen can render the configured branding before sign-in.
Mutating routes (POST/DELETE /api/branding/asset/:kind) remain
admin-only. Text fields (instance_name, instance_tagline) ride the
existing /api/settings flow; binary assets get a dedicated multipart
upload route that persists files under DynamicConfigsDir/branding/.
To prevent the Settings page's stale local state from clobbering an
upload on save, UpdateSettingsEndpoint preserves whatever the on-disk
asset filename fields are regardless of the body — /api/branding/asset/*
are the sole writers for those fields.
The MCP catalog gains get_branding and set_branding tools (text fields
only; file upload stays UI-only) plus a configure_branding skill prompt.
While wiring this up, the same restart-loss class of bug surfaced for
several existing fields whose RuntimeSettings entries were never read
by the startup loader. Fix loadRuntimeSettingsFromFile() to load:
- branding (instance_name, instance_tagline, *_file basenames)
- auto_upgrade_backends, prefer_development_backends
- localai_assistant_enabled
- open_responses_store_ttl
- the 7 existing AgentPool fields (enabled, default/embedding model,
chunking sizes, enable_logs, collection_db_path)
Also exposes 3 new AgentPool runtime settings (vector_engine,
database_url, agent_hub_url) via /api/settings + the Settings UI, with
the same load-on-startup wiring. The file watcher's manual-edit path
is intentionally not changed — the in-process API endpoints already
update appConfig directly, so the watcher is redundant for supported
flows and a separate refactor for everything else.
15 TDD specs cover the loader behaviour (1 branding + 11 adjacent + 3
new agent-pool); 2 specs cover the persistence helpers and the
clobber-prevention contract.
Assisted-by: claude-code:claude-opus-4-7
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
