feat: add PluginBlock component for rendering external web components in sandboxed iframes

feat: implement PluginsPage for managing plugins with create, toggle, and delete functionalities

feat: create PedagogicalAnalyticsPage for displaying course analytics including quality metrics, discrimination index, and curricular suggestions

Co-authored-by: Copilot <copilot@github.com>

services/cms-service/migrations/20260427000001_lesson_collaborative_canvas.sql

@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS lesson_collaborative_canvases (
+    lesson_id UUID PRIMARY KEY REFERENCES lessons(id) ON DELETE CASCADE,
+    organization_id UUID NOT NULL REFERENCES organizations(id) ON DELETE CASCADE,
+    canvas_state JSONB NOT NULL DEFAULT '{}'::jsonb,
+    updated_by UUID REFERENCES users(id) ON DELETE SET NULL,
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_lesson_collaborative_canvases_org_id
+    ON lesson_collaborative_canvases (organization_id);

services/cms-service/migrations/20260427000002_lesson_collaborative_canvas_revision.sql

@@ -0,0 +1,2 @@
+ALTER TABLE lesson_collaborative_canvases
+    ADD COLUMN IF NOT EXISTS revision BIGINT NOT NULL DEFAULT 0;

services/cms-service/migrations/20260427000003_org_plugins.sql

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+-- Fase 35: Ecosistema de Plugins
+-- Tabla de plugins registrados por organización
+
+CREATE TABLE IF NOT EXISTS org_plugins (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    organization_id UUID NOT NULL,
+    name            TEXT NOT NULL,
+    description     TEXT NOT NULL DEFAULT '',
+    component_url   TEXT NOT NULL,
+    icon_url        TEXT,
+    config          JSONB NOT NULL DEFAULT '{}',
+    enabled         BOOLEAN NOT NULL DEFAULT TRUE,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_org_plugins_org_id ON org_plugins(organization_id);
+
+-- Trigger para updated_at automático
+CREATE OR REPLACE FUNCTION update_org_plugins_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trg_org_plugins_updated_at
+    BEFORE UPDATE ON org_plugins
+    FOR EACH ROW EXECUTE FUNCTION update_org_plugins_updated_at();