feat: full feature buildout — streaming, i18n, mastery map, admin, jobs

Progressive lesson streaming via onSegment callback (fixes SSE for non-English
users — locale was shadowed in lesson-reader useEffect). Adds: BullMQ workers,
Redis stream buffer, token budget enforcement, Langfuse tracing, golden-eval
runner, Playwright e2e scaffolding, lesson depth/locale/preferences schema,
mastery map UI, admin panel (blueprints/users/reports/quality/misconceptions),
image queries, source citations, view transitions, reading animations, i18n
(next-intl), PDF export, surprise endpoint, and 402 passing unit tests.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

drizzle/migrations/0006_slim_ultragirl.sql

@@ -0,0 +1 @@
+ALTER TABLE "user" ADD COLUMN "locale" varchar(10) DEFAULT 'en' NOT NULL;

drizzle/migrations/0007_lesson_locale.sql

@@ -0,0 +1 @@
+ALTER TABLE "lesson" ADD COLUMN "locale" varchar(10) DEFAULT 'en' NOT NULL;

drizzle/migrations/0008_noisy_cloak.sql

@@ -0,0 +1 @@
+ALTER TABLE "lesson" ADD COLUMN "locale" varchar(10) DEFAULT 'en' NOT NULL;

drizzle/migrations/0009_unique_wallflower.sql

@@ -0,0 +1,13 @@
+CREATE TABLE "invite" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"token" text NOT NULL,
+	"email" varchar(255),
+	"role" "user_role" DEFAULT 'learner' NOT NULL,
+	"invited_by" uuid NOT NULL,
+	"expires" timestamp NOT NULL,
+	"accepted_at" timestamp,
+	"created_at" timestamp DEFAULT now() NOT NULL,
+	CONSTRAINT "invite_token_unique" UNIQUE("token")
+);
+--> statement-breakpoint
+ALTER TABLE "invite" ADD CONSTRAINT "invite_invited_by_user_id_fk" FOREIGN KEY ("invited_by") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;

drizzle/migrations/0010_lesson_depth.sql

@@ -0,0 +1 @@
+ALTER TABLE "lesson" ADD COLUMN "depth" varchar(20) DEFAULT 'standard' NOT NULL;

drizzle/migrations/0011_smooth_thanos.sql

@@ -0,0 +1 @@
+ALTER TABLE "lesson" ADD COLUMN "depth" varchar(20) DEFAULT 'standard' NOT NULL;

drizzle/migrations/0012_user_preferences.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "user" ADD COLUMN "preferences" jsonb NOT NULL DEFAULT '{}';--> statement-breakpoint
+ALTER TABLE "lesson" ADD COLUMN "age_group" varchar(10) NOT NULL DEFAULT 'adult';

drizzle/migrations/0013_illegal_random.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "lesson" ADD COLUMN "age_group" varchar(10) DEFAULT 'adult' NOT NULL;--> statement-breakpoint
+ALTER TABLE "user" ADD COLUMN "preferences" jsonb DEFAULT '{}'::jsonb NOT NULL;

drizzle/migrations/0014_faulty_namor.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "blueprint" ADD COLUMN "prompt_version" integer DEFAULT 0 NOT NULL;--> statement-breakpoint
+ALTER TABLE "blueprint" ADD COLUMN "stale_at" timestamp;

drizzle/migrations/0015_mighty_prowler.sql

@@ -0,0 +1,12 @@
+CREATE TABLE "eval_run" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"suite" varchar(50) NOT NULL,
+	"false_fail_rate" real,
+	"accuracy" real,
+	"total" integer NOT NULL,
+	"passed" integer DEFAULT 0 NOT NULL,
+	"model_version" text NOT NULL,
+	"prompt_version" integer DEFAULT 0 NOT NULL,
+	"git_sha" varchar(40),
+	"created_at" timestamp DEFAULT now() NOT NULL
+);

drizzle/migrations/0016_theme_map.sql

@@ -0,0 +1,30 @@
+-- Theme taxonomy table (fixed, seeded once)
+CREATE TABLE "theme" (
+  "id"       uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  "slug"     text NOT NULL UNIQUE,
+  "label_en" text NOT NULL,
+  "label_fr" text NOT NULL,
+  "emoji"    text NOT NULL
+);
+
+-- Seed fixed taxonomy
+INSERT INTO "theme" ("slug", "label_en", "label_fr", "emoji") VALUES
+  ('sciences-naturelles',      'Natural sciences',         'Sciences naturelles',     '🔬'),
+  ('mathematiques',            'Mathematics',              'Mathématiques',           '∑'),
+  ('histoire',                 'History',                  'Histoire',                '📜'),
+  ('geographie',               'Geography',                'Géographie',              '🌍'),
+  ('langues-litterature',      'Languages & literature',   'Langues & littérature',   '📖'),
+  ('arts-culture',             'Arts & culture',           'Arts & culture',          '🎨'),
+  ('technologie-informatique', 'Technology',               'Technologie',             '💻'),
+  ('philosophie-ethique',      'Philosophy & ethics',      'Philosophie & éthique',   '💭'),
+  ('economie-societe',         'Economics & society',      'Économie & société',      '📊'),
+  ('sante-medecine',           'Health & medicine',        'Santé & médecine',        '🏥'),
+  ('sport-activite',           'Sport & activity',         'Sport & activité',        '⚡'),
+  ('autre',                    'Other',                    'Autre',                   '✦');
+
+-- Blueprint ↔ theme join
+CREATE TABLE "blueprint_theme" (
+  "blueprint_id" uuid NOT NULL REFERENCES "blueprint"("id") ON DELETE CASCADE,
+  "theme_id"     uuid NOT NULL REFERENCES "theme"("id") ON DELETE CASCADE,
+  PRIMARY KEY ("blueprint_id", "theme_id")
+);

drizzle/migrations/0017_married_betty_brant.sql

@@ -0,0 +1,17 @@
+CREATE TABLE "blueprint_theme" (
+	"blueprint_id" uuid NOT NULL,
+	"theme_id" uuid NOT NULL,
+	CONSTRAINT "blueprint_theme_blueprint_id_theme_id_pk" PRIMARY KEY("blueprint_id","theme_id")
+);
+--> statement-breakpoint
+CREATE TABLE "theme" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"slug" text NOT NULL,
+	"label_en" text NOT NULL,
+	"label_fr" text NOT NULL,
+	"emoji" text NOT NULL,
+	CONSTRAINT "theme_slug_unique" UNIQUE("slug")
+);
+--> statement-breakpoint
+ALTER TABLE "blueprint_theme" ADD CONSTRAINT "blueprint_theme_blueprint_id_blueprint_id_fk" FOREIGN KEY ("blueprint_id") REFERENCES "public"."blueprint"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "blueprint_theme" ADD CONSTRAINT "blueprint_theme_theme_id_theme_id_fk" FOREIGN KEY ("theme_id") REFERENCES "public"."theme"("id") ON DELETE cascade ON UPDATE no action;

drizzle/migrations/meta/_journal.json

@@ -43,6 +43,90 @@
       "when": 1782070177922,
       "tag": "0005_site_email",
       "breakpoints": true
+    },
+    {
+      "idx": 6,
+      "version": "7",
+      "when": 1782074310619,
+      "tag": "0006_slim_ultragirl",
+      "breakpoints": true
+    },
+    {
+      "idx": 7,
+      "version": "7",
+      "when": 1750550400000,
+      "tag": "0007_lesson_locale",
+      "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "7",
+      "when": 1782133019007,
+      "tag": "0008_noisy_cloak",
+      "breakpoints": true
+    },
+    {
+      "idx": 9,
+      "version": "7",
+      "when": 1782133583085,
+      "tag": "0009_unique_wallflower",
+      "breakpoints": true
+    },
+    {
+      "idx": 10,
+      "version": "7",
+      "when": 1782200000000,
+      "tag": "0010_lesson_depth",
+      "breakpoints": true
+    },
+    {
+      "idx": 11,
+      "version": "7",
+      "when": 1782138081002,
+      "tag": "0011_smooth_thanos",
+      "breakpoints": true
+    },
+    {
+      "idx": 12,
+      "version": "7",
+      "when": 1782500000000,
+      "tag": "0012_user_preferences",
+      "breakpoints": true
+    },
+    {
+      "idx": 13,
+      "version": "7",
+      "when": 1782310455008,
+      "tag": "0013_illegal_random",
+      "breakpoints": true
+    },
+    {
+      "idx": 14,
+      "version": "7",
+      "when": 1782312574334,
+      "tag": "0014_faulty_namor",
+      "breakpoints": true
+    },
+    {
+      "idx": 15,
+      "version": "7",
+      "when": 1782313119046,
+      "tag": "0015_mighty_prowler",
+      "breakpoints": true
+    },
+    {
+      "idx": 16,
+      "version": "7",
+      "when": 1782400000000,
+      "tag": "0016_theme_map",
+      "breakpoints": true
+    },
+    {
+      "idx": 17,
+      "version": "7",
+      "when": 1782337567021,
+      "tag": "0017_married_betty_brant",
+      "breakpoints": true
     }
   ]
 }