feat(FN-192): DB schema + Migration (+7 more)

Commits merged:
- feat(FN-192): complete Step 8 — Documentation & Delivery
- feat(FN-192): complete Step 7 — Testing & Verification
- feat(FN-192): complete Step 6 — i18n keys replace stage with changeType
- feat(FN-192): complete Step 5 — ChangelogTab rename stage to changeType
- feat(FN-192): complete Step 4 — Badge component rename stage to changeType
- feat(FN-192): complete Step 3 — API Service + Controller Spec
- feat(FN-192): complete Step 2 — Shared Zod schemas + type exports + DTO
- feat(FN-192): complete Step 1 — DB schema + Migration

Files changed:
apps/api/drizzle/0001_charming_quicksand.sql       |    2 +
 apps/api/drizzle/meta/0001_snapshot.json           | 5167 ++++++++++++++++++++
 apps/api/drizzle/meta/_journal.json                |    9 +-
 .../api/src/changelog/changelog.controller.spec.ts |    2 +-
 apps/api/src/changelog/changelog.dto.ts            |    2 +-
 apps/api/src/changelog/changelog.service.spec.ts   |    4 +-
 apps/api/src/changelog/changelog.service.ts        |    4 +-
 apps/api/src/database/schema/core.ts               |    2 +-
 apps/web/src/components/settings/changelog-tab.tsx |   11 +-
 apps/web/src/messages/en.json                      |    8 +-
 apps/web/src/messages/tr.json                      |    8 +-
 docs/INDEX.md                                      |    4 +-
 packages/shared/src/index.ts                       |    4 +-
 packages/shared/src/schemas/changelog.ts           |    8 +-
 packages/shared/src/types/changelog.ts             |    2 +-
 packages/ui/src/badge.tsx                          |   12 +-
 16 files changed, 5215 insertions(+), 34 deletions(-)

Fusion-Task-Id: FN-192

apps/api/drizzle/0001_charming_quicksand.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "changelog_entries" DROP COLUMN "stage";
+ALTER TABLE "changelog_entries" ADD COLUMN "change_type" varchar(20) DEFAULT 'feature' NOT NULL;

apps/api/drizzle/meta/_journal.json

@@ -8,6 +8,13 @@
       "when": 1778535325959,
       "tag": "0000_brief_guardian",
       "breakpoints": true
+    },
+    {
+      "idx": 1,
+      "version": "7",
+      "when": 1747039600000,
+      "tag": "0001_charming_quicksand",
+      "breakpoints": true
     }
   ]
-}
+}

apps/api/src/changelog/changelog.controller.spec.ts

@@ -21,7 +21,7 @@ function createMockService(overrides: Record<string, unknown> = {}) {
 
 const sampleEntry = {
   id: "entry-1",
-  stage: "prod" as const,
+  changeType: "feature" as const,
   title: "Deployed v2.3.0",
   description: "Production deploy completed successfully.",
   publishedAt: "2026-05-11T12:00:00.000Z",

apps/api/src/changelog/changelog.dto.ts

@@ -1 +1 @@
-export type { CreateChangelogEntry, UpdateChangelogEntry, ChangelogStage } from "@sase/shared";
+export type { CreateChangelogEntry, UpdateChangelogEntry, ChangelogChangeType } from "@sase/shared";

apps/api/src/changelog/changelog.service.spec.ts

@@ -49,7 +49,7 @@ const dateObj = new Date(isoDate);
 
 const sampleEntry = {
   id: "entry-1",
-  stage: "prod" as const,
+  changeType: "feature" as const,
   title: "New Feature",
   description: "A new feature was added.",
   publishedAt: dateObj,
@@ -130,7 +130,7 @@ describe("ChangelogService", () => {
       const service = new ChangelogService(db as any, redis as any);
 
       const result = await service.create({
-        stage: "prod",
+        changeType: "feature",
         title: "New Feature",
         description: "A new feature was added.",
         publishedAt: isoDate,

apps/api/src/changelog/changelog.service.ts

@@ -57,7 +57,7 @@ export class ChangelogService {
     const [row] = await this.db
       .insert(changelogEntries)
       .values({
-        stage: dto.stage,
+        changeType: dto.changeType,
         title: dto.title,
         description: dto.description,
         publishedAt: new Date(dto.publishedAt),
@@ -76,7 +76,7 @@ export class ChangelogService {
 
   async update(id: string, dto: UpdateChangelogEntry): Promise<ChangelogEntry> {
     const values: Record<string, unknown> = { updatedAt: new Date() };
-    if (dto.stage !== undefined) values.stage = dto.stage;
+    if (dto.changeType !== undefined) values.changeType = dto.changeType;
     if (dto.title !== undefined) values.title = dto.title;
     if (dto.description !== undefined) values.description = dto.description;
     if (dto.publishedAt !== undefined) values.publishedAt = new Date(dto.publishedAt);

apps/api/src/database/schema/core.ts

@@ -433,7 +433,7 @@ export const changelogEntries = pgTable(
   "changelog_entries",
   {
     id: uuid("id").primaryKey().defaultRandom(),
-    stage: varchar("stage", { length: 10 }).default("prod").notNull(),
+    changeType: varchar("change_type", { length: 20 }).default("feature").notNull(),
     title: varchar("title", { length: 255 }).notNull(),
     description: text("description").notNull(),
     publishedAt: timestamp("published_at", { withTimezone: true }).notNull(),