feat(storage): implement NAS content storage with read/write capabilities

feat(docker): configure NAS content and EPUB source directories in docker-compose

feat(migrations): add tables for SourceAsset, ImportJob, ChapterContentRef, and AssetNovelMapping

feat(scripts): create backfill script for populating ChapterContentRef from MongoDB chapters

migrations/2026_04_nas_content_storage.sql

@@ -0,0 +1,43 @@
+CREATE EXTENSION IF NOT EXISTS unaccent;
+
+CREATE TABLE IF NOT EXISTS "SourceAsset" (
+    id TEXT PRIMARY KEY,
+    path TEXT NOT NULL,
+    sha256 TEXT NOT NULL,
+    opf_identifier TEXT,
+    title TEXT,
+    author TEXT,
+    status TEXT NOT NULL DEFAULT 'discovered',
+    "createdAt" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updatedAt" TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "SourceAsset_sha256_key" ON "SourceAsset"(sha256);
+
+CREATE TABLE IF NOT EXISTS "ImportJob" (
+    id TEXT PRIMARY KEY,
+    "sourceAssetId" TEXT NOT NULL REFERENCES "SourceAsset"(id) ON DELETE CASCADE,
+    status TEXT NOT NULL DEFAULT 'pending',
+    error TEXT,
+    "createdAt" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updatedAt" TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS "ChapterContentRef" (
+    "chapterId" TEXT PRIMARY KEY,
+    "txtHref" TEXT NOT NULL,
+    "rawHtmlHref" TEXT NOT NULL,
+    "contentHash" TEXT NOT NULL,
+    "createdAt" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updatedAt" TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS "AssetNovelMapping" (
+    id TEXT PRIMARY KEY,
+    "sourceAssetId" TEXT NOT NULL REFERENCES "SourceAsset"(id) ON DELETE CASCADE,
+    "novelId" TEXT NOT NULL,
+    status TEXT NOT NULL DEFAULT 'pending',
+    note TEXT,
+    "createdAt" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updatedAt" TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);