pinakes-core: book management foundation

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I379005c29a79a637a8e1fc3709907cd36a6a6964

migrations/sqlite/V12__book_management.sql

@@ -0,0 +1,54 @@
+-- V12: Book Management Schema
+-- Adds comprehensive book metadata tracking, authors, and identifiers
+
+-- Book metadata (supplements media_items for EPUB/PDF/MOBI)
+CREATE TABLE book_metadata (
+    media_id TEXT PRIMARY KEY REFERENCES media_items(id) ON DELETE CASCADE,
+    isbn TEXT,
+    isbn13 TEXT,              -- Normalized ISBN-13 for lookups
+    publisher TEXT,
+    language TEXT,            -- ISO 639-1 code
+    page_count INTEGER,
+    publication_date TEXT,    -- ISO 8601 date string
+    series_name TEXT,
+    series_index REAL,        -- Supports 1.5, etc.
+    format TEXT,              -- 'epub', 'pdf', 'mobi', 'azw3'
+    created_at TEXT NOT NULL DEFAULT (datetime('now')),
+    updated_at TEXT NOT NULL DEFAULT (datetime('now'))
+) STRICT;
+
+CREATE INDEX idx_book_isbn13 ON book_metadata(isbn13);
+CREATE INDEX idx_book_series ON book_metadata(series_name, series_index);
+CREATE INDEX idx_book_publisher ON book_metadata(publisher);
+CREATE INDEX idx_book_language ON book_metadata(language);
+
+-- Multiple authors per book (many-to-many)
+CREATE TABLE book_authors (
+    media_id TEXT NOT NULL REFERENCES media_items(id) ON DELETE CASCADE,
+    author_name TEXT NOT NULL,
+    author_sort TEXT,         -- "Last, First" for sorting
+    role TEXT NOT NULL DEFAULT 'author', -- author, translator, editor, illustrator
+    position INTEGER NOT NULL DEFAULT 0,
+    PRIMARY KEY (media_id, author_name, role)
+) STRICT;
+
+CREATE INDEX idx_book_authors_name ON book_authors(author_name);
+CREATE INDEX idx_book_authors_sort ON book_authors(author_sort);
+
+-- Multiple identifiers (ISBN variants, ASIN, DOI, etc.)
+CREATE TABLE book_identifiers (
+    media_id TEXT NOT NULL REFERENCES media_items(id) ON DELETE CASCADE,
+    identifier_type TEXT NOT NULL,  -- isbn, isbn13, asin, doi, lccn, oclc
+    identifier_value TEXT NOT NULL,
+    PRIMARY KEY (media_id, identifier_type, identifier_value)
+) STRICT;
+
+CREATE INDEX idx_book_identifiers ON book_identifiers(identifier_type, identifier_value);
+
+-- Trigger to update updated_at on book_metadata changes
+CREATE TRIGGER update_book_metadata_timestamp
+    AFTER UPDATE ON book_metadata
+    FOR EACH ROW
+BEGIN
+    UPDATE book_metadata SET updated_at = datetime('now') WHERE media_id = NEW.media_id;
+END;