Update invidious stack to use companion approach

- Replace inv_sig_helper with invidious-companion for better YouTube API handling
- Add healthcheck for main container
- Add resource limits for all containers
- Add SQL init scripts for fresh database setup
- Update README with invidious secrets documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

stacks/invidious/config/sql/annotations.sql

@@ -0,0 +1,12 @@
+-- Table: public.annotations
+
+-- DROP TABLE public.annotations;
+
+CREATE TABLE IF NOT EXISTS public.annotations
+(
+  id text NOT NULL,
+  annotations xml,
+  CONSTRAINT annotations_id_key UNIQUE (id)
+);
+
+GRANT ALL ON TABLE public.annotations TO current_user;

stacks/invidious/config/sql/channel_videos.sql

@@ -0,0 +1,30 @@
+-- Table: public.channel_videos
+
+-- DROP TABLE public.channel_videos;
+
+CREATE TABLE IF NOT EXISTS public.channel_videos
+(
+  id text NOT NULL,
+  title text,
+  published timestamp with time zone,
+  updated timestamp with time zone,
+  ucid text,
+  author text,
+  length_seconds integer,
+  live_now boolean,
+  premiere_timestamp timestamp with time zone,
+  views bigint,
+  CONSTRAINT channel_videos_id_key UNIQUE (id)
+);
+
+GRANT ALL ON TABLE public.channel_videos TO current_user;
+
+-- Index: public.channel_videos_ucid_idx
+
+-- DROP INDEX public.channel_videos_ucid_idx;
+
+CREATE INDEX IF NOT EXISTS channel_videos_ucid_idx
+  ON public.channel_videos
+  USING btree
+  (ucid COLLATE pg_catalog."default");
+

stacks/invidious/config/sql/channels.sql

@@ -0,0 +1,25 @@
+-- Table: public.channels
+
+-- DROP TABLE public.channels;
+
+CREATE TABLE IF NOT EXISTS public.channels
+(
+  id text NOT NULL,
+  author text,
+  updated timestamp with time zone,
+  deleted boolean,
+  subscribed timestamp with time zone,
+  CONSTRAINT channels_id_key UNIQUE (id)
+);
+
+GRANT ALL ON TABLE public.channels TO current_user;
+
+-- Index: public.channels_id_idx
+
+-- DROP INDEX public.channels_id_idx;
+
+CREATE INDEX IF NOT EXISTS channels_id_idx
+  ON public.channels
+  USING btree
+  (id COLLATE pg_catalog."default");
+

stacks/invidious/config/sql/nonces.sql

@@ -0,0 +1,22 @@
+-- Table: public.nonces
+
+-- DROP TABLE public.nonces;
+
+CREATE TABLE IF NOT EXISTS public.nonces
+(
+  nonce text,
+  expire timestamp with time zone,
+  CONSTRAINT nonces_id_key UNIQUE (nonce)
+);
+
+GRANT ALL ON TABLE public.nonces TO current_user;
+
+-- Index: public.nonces_nonce_idx
+
+-- DROP INDEX public.nonces_nonce_idx;
+
+CREATE INDEX IF NOT EXISTS nonces_nonce_idx
+  ON public.nonces
+  USING btree
+  (nonce COLLATE pg_catalog."default");
+

stacks/invidious/config/sql/playlist_videos.sql

@@ -0,0 +1,19 @@
+-- Table: public.playlist_videos
+
+-- DROP TABLE public.playlist_videos;
+
+CREATE TABLE IF NOT EXISTS public.playlist_videos
+(
+    title text,
+    id text,
+    author text,
+    ucid text,
+    length_seconds integer,
+    published timestamptz,
+    plid text references playlists(id),
+    index int8,
+    live_now boolean,
+    PRIMARY KEY (index,plid)
+);
+
+GRANT ALL ON TABLE public.playlist_videos TO current_user;

stacks/invidious/config/sql/playlists.sql

@@ -0,0 +1,29 @@
+-- Type: public.privacy
+
+-- DROP TYPE public.privacy;
+
+CREATE TYPE public.privacy AS ENUM
+(
+    'Public',
+    'Unlisted',
+    'Private'
+);
+
+-- Table: public.playlists
+
+-- DROP TABLE public.playlists;
+
+CREATE TABLE IF NOT EXISTS public.playlists
+(
+    title text,
+    id text primary key,
+    author text,
+    description text,
+    video_count integer,
+    created timestamptz,
+    updated timestamptz,
+    privacy privacy,
+    index int8[]
+);
+
+GRANT ALL ON public.playlists TO current_user;

stacks/invidious/config/sql/session_ids.sql

@@ -0,0 +1,23 @@
+-- Table: public.session_ids
+
+-- DROP TABLE public.session_ids;
+
+CREATE TABLE IF NOT EXISTS public.session_ids
+(
+  id text NOT NULL,
+  email text,
+  issued timestamp with time zone,
+  CONSTRAINT session_ids_pkey PRIMARY KEY (id)
+);
+
+GRANT ALL ON TABLE public.session_ids TO current_user;
+
+-- Index: public.session_ids_id_idx
+
+-- DROP INDEX public.session_ids_id_idx;
+
+CREATE INDEX IF NOT EXISTS session_ids_id_idx
+  ON public.session_ids
+  USING btree
+  (id COLLATE pg_catalog."default");
+

stacks/invidious/config/sql/users.sql

@@ -0,0 +1,29 @@
+-- Table: public.users
+
+-- DROP TABLE public.users;
+
+CREATE TABLE IF NOT EXISTS public.users
+(
+  updated timestamp with time zone,
+  notifications text[],
+  subscriptions text[],
+  email text NOT NULL,
+  preferences text,
+  password text,
+  token text,
+  watched text[],
+  feed_needs_update boolean,
+  CONSTRAINT users_email_key UNIQUE (email)
+);
+
+GRANT ALL ON TABLE public.users TO current_user;
+
+-- Index: public.email_unique_idx
+
+-- DROP INDEX public.email_unique_idx;
+
+CREATE UNIQUE INDEX IF NOT EXISTS email_unique_idx
+  ON public.users
+  USING btree
+  (lower(email) COLLATE pg_catalog."default");
+

stacks/invidious/config/sql/videos.sql

@@ -0,0 +1,23 @@
+-- Table: public.videos
+
+-- DROP TABLE public.videos;
+
+CREATE UNLOGGED TABLE IF NOT EXISTS public.videos
+(
+  id text NOT NULL,
+  info text,
+  updated timestamp with time zone,
+  CONSTRAINT videos_pkey PRIMARY KEY (id)
+);
+
+GRANT ALL ON TABLE public.videos TO current_user;
+
+-- Index: public.id_idx
+
+-- DROP INDEX public.id_idx;
+
+CREATE UNIQUE INDEX IF NOT EXISTS id_idx
+  ON public.videos
+  USING btree
+  (id COLLATE pg_catalog."default");
+