feat: books.toml -> books.ini, multi-language (add Latin dialect), config-scoped citation display

books.ini with [en]/[pl]/[la]; parseBooks reads INI (bible drops go-toml).
Latin dialect resolves EF citations (Eccli->Sirach, Apoc->Revelation, Luc...);
sigla_style gains 'latin'. Reading citations now DISPLAY in the configured
sigla (FormatRef(SiglaLang)), not raw English. One-shot books.toml->books.ini
user migration (go-toml now config-only). Web settings editor -> books.ini.

3 files changed, 277 insertions, 22 deletions

diff --git a/internal/bible/books.ini b/internal/bible/books.ini
new file mode 100644
index 0000000..5d8f633
--- /dev/null
+++ b/internal/bible/books.ini
@@ -0,0 +1,243 @@
+# lectio book names & abbreviations, per dialect (en, pl, la).
+#
+# This is the built-in default, embedded in the binary. To customise, copy any
+# lines you want to change into ~/.config/lectio/books.ini (next to config.ini).
+# Your file is MERGED over these defaults per book: you only list the books you
+# want to change; every book you don't mention keeps the default below.
+#
+# Each entry is a flat list of forms for one book, in ONE language:
+#   - the FIRST form is the shortcut shown by `lectio --list`
+#   - the LAST form is the full name shown by `lectio --list`
+#   - EVERY form (first, last, and any in between) resolves in `lectio --ref`
+# Resolution is language-scoped and idiomatic: in English mode only the [en]
+# forms resolve (so "Jn" works, "Łk" does not); in Polish mode only [pl].
+#
+# The table KEY is the book's English canonical name -- it must match the Bible
+# corpus, so do not change the keys, only the forms. Books appear in `--list`
+# in scriptural order regardless of the order here.
+
+[en]
+Genesis = Gen, Genesis
+Exodus = Exod, Exodus
+Leviticus = Lev, Leviticus
+Numbers = Num, Numbers
+Deuteronomy = Deut, Deuteronomy
+Joshua = Josh, Joshua
+Judges = Judg, Judges
+Ruth = Ru, Ruth
+1 Samuel = 1 Sam, 1 Samuel
+2 Samuel = 2 Sam, 2 Samuel
+1 Kings = 1 Kgs, 1 Kings
+2 Kings = 2 Kgs, 2 Kings
+1 Chronicles = 1 Chr, 1 Chronicles
+2 Chronicles = 2 Chr, 2 Chronicles
+Ezra = Ezra, Ezra
+Nehemiah = Neh, Nehemiah
+Tobit = Tob, Tobit
+Judith = Jdt, Judith
+Esther = Esth, Esther
+1 Maccabees = 1 Macc, 1 Maccabees
+2 Maccabees = 2 Macc, 2 Maccabees
+Job = Jb, Job
+Psalms = Ps, Psalm, Psalms
+Proverbs = Prov, Proverbs
+Ecclesiastes = Eccl, Ecclesiastes
+Song of Solomon = Song, Song of Songs
+Wisdom = Wis, Wisdom
+Sirach = Sir, Ecclus, Eccli, Ecclesiasticus, Sirach
+Isaiah = Isa, Isaiah
+Jeremiah = Jer, Jeremiah
+Lamentations = Lam, Lamentations
+Baruch = Bar, Baruch
+Ezekiel = Ezek, Ezekiel
+Daniel = Dan, Daniel
+Hosea = Hos, Hosea
+Joel = Jl, Joel
+Amos = Am, Amos
+Obadiah = Obad, Obadiah
+Jonah = Jon, Jonah
+Micah = Mic, Micah
+Nahum = Nah, Nahum
+Habakkuk = Hab, Habakkuk
+Zephaniah = Zeph, Zephaniah
+Haggai = Hag, Haggai
+Zechariah = Zech, Zechariah
+Malachi = Mal, Malachi
+Matthew = Matt, Matthew
+Mark = Mk, Mark
+Luke = Lk, Luke
+John = Jn, John
+The Acts = Acts, Acts
+Romans = Rom, Romans
+1 Corinthians = 1 Cor, 1 Corinthians
+2 Corinthians = 2 Cor, 2 Corinthians
+Galatians = Gal, Galatians
+Ephesians = Eph, Ephesians
+Philippians = Phil, Philippians
+Colossians = Col, Colossians
+1 Thessalonians = 1 Thess, 1 Thessalonians
+2 Thessalonians = 2 Thess, 2 Thessalonians
+1 Timothy = 1 Tim, 1 Timothy
+2 Timothy = 2 Tim, 2 Timothy
+Titus = Ti, Titus
+Philemon = Phlm, Philemon
+Hebrews = Heb, Hebrews
+James = Jas, James
+1 Peter = 1 Pet, 1 Peter
+2 Peter = 2 Pet, 2 Peter
+1 John = 1 Jn, 1 John
+2 John = 2 Jn, 2 John
+3 John = 3 Jn, 3 John
+Jude = Jude, Jude
+Revelation = Rev, Apoc, Apocalypse, Revelation
+
+[pl]
+Genesis = Rdz, Rodzaju
+Exodus = Wj, Wyjścia
+Leviticus = Kpł, Kapłańska
+Numbers = Lb, Liczb
+Deuteronomy = Pwt, Powtórzonego Prawa
+Joshua = Joz, Jozuego
+Judges = Sdz, Sędziów
+Ruth = Rt, Rut
+1 Samuel = 1 Sm, 1 Samuela
+2 Samuel = 2 Sm, 2 Samuela
+1 Kings = 1 Krl, 1 Królewska
+2 Kings = 2 Krl, 2 Królewska
+1 Chronicles = 1 Krn, 1 Kronik
+2 Chronicles = 2 Krn, 2 Kronik
+Ezra = Ezd, Ezdrasza
+Nehemiah = Ne, Nehemiasza
+Tobit = Tb, Tobiasza
+Judith = Jdt, Judyty
+Esther = Est, Estery
+1 Maccabees = 1 Mch, 1 Machabejska
+2 Maccabees = 2 Mch, 2 Machabejska
+Job = Hi, Hioba
+Psalms = Ps, Psalm, Psalmy
+Proverbs = Prz, Przysłów
+Ecclesiastes = Koh, Koheleta
+Song of Solomon = Pnp, Pieśń nad Pieśniami
+Wisdom = Mdr, Mądrości
+Sirach = Syr, Syracha
+Isaiah = Iz, Izajasza
+Jeremiah = Jr, Jeremiasza
+Lamentations = Lm, Lamentacje
+Baruch = Ba, Barucha
+Ezekiel = Ez, Ezechiela
+Daniel = Dn, Daniela
+Hosea = Oz, Ozeasza
+Joel = Jl, Joela
+Amos = Am, Amosa
+Obadiah = Ab, Abdiasza
+Jonah = Jon, Jonasza
+Micah = Mi, Micheasza
+Nahum = Na, Nahuma
+Habakkuk = Ha, Habakuka
+Zephaniah = So, Sofoniasza
+Haggai = Ag, Aggeusza
+Zechariah = Za, Zachariasza
+Malachi = Ml, Malachiasza
+Matthew = Mt, Mateusza
+Mark = Mk, Marka
+Luke = Łk, Łukasza
+John = J, Jana
+The Acts = Dz, Dzieje Apostolskie
+Romans = Rz, Rzymian
+1 Corinthians = 1 Kor, 1 Koryntian
+2 Corinthians = 2 Kor, 2 Koryntian
+Galatians = Ga, Galatów
+Ephesians = Ef, Efezjan
+Philippians = Flp, Filipian
+Colossians = Kol, Kolosan
+1 Thessalonians = 1 Tes, 1 Tesaloniczan
+2 Thessalonians = 2 Tes, 2 Tesaloniczan
+1 Timothy = 1 Tm, 1 Tymoteusza
+2 Timothy = 2 Tm, 2 Tymoteusza
+Titus = Tt, Tytusa
+Philemon = Flm, Filemona
+Hebrews = Hbr, Hebrajczyków
+James = Jk, Jakuba
+1 Peter = 1 P, 1 Piotra
+2 Peter = 2 P, 2 Piotra
+1 John = 1 J, 1 Jana
+2 John = 2 J, 2 Jana
+3 John = 3 J, 3 Jana
+Jude = Jud, Judy
+Revelation = Ap, Apokalipsa
+
+# Latin (Vulgate) — book names/abbreviations for EF citations and Latin sigla.
+[la]
+Genesis = Gen, Genesis
+Exodus = Ex, Exodus
+Leviticus = Lev, Leviticus
+Numbers = Num, Numeri
+Deuteronomy = Deut, Deuteronomium
+Joshua = Ios, Iosue
+Judges = Idc, Iudicum
+Ruth = Ruth
+1 Samuel = 1 Reg, 1 Sam, 1 Samuelis, 1 Regum
+2 Samuel = 2 Reg, 2 Sam, 2 Samuelis, 2 Regum
+1 Kings = 3 Reg, 3 Regum
+2 Kings = 4 Reg, 4 Regum
+1 Chronicles = 1 Par, 1 Paralipomenon
+2 Chronicles = 2 Par, 2 Paralipomenon
+Ezra = Esd, 1 Esdrae, Esdrae
+Nehemiah = Neh, 2 Esd, Nehemiae
+Tobit = Tob, Tobiae, Tobias
+Judith = Idt, Iudith
+Esther = Esth, Esther
+1 Maccabees = 1 Mac, 1 Machabaeorum
+2 Maccabees = 2 Mac, 2 Machabaeorum
+Job = Iob
+Psalms = Ps, Psalmi
+Proverbs = Prov, Proverbia
+Ecclesiastes = Eccle, Ecclesiastes
+Song of Solomon = Cant, Canticum, Canticum Canticorum
+Wisdom = Sap, Sapientia
+Sirach = Eccli, Ecclus, Sir, Ecclesiasticus
+Isaiah = Is, Isaias
+Jeremiah = Ier, Ieremias
+Lamentations = Lam, Threni, Lamentationes
+Baruch = Bar, Baruch
+Ezekiel = Ez, Ezechiel
+Daniel = Dan, Daniel
+Hosea = Os, Osee
+Joel = Ioel
+Amos = Am, Amos
+Obadiah = Abd, Abdias
+Jonah = Ion, Ionas
+Micah = Mich, Michaeas
+Nahum = Nah, Nahum
+Habakkuk = Hab, Habacuc
+Zephaniah = Soph, Sophonias
+Haggai = Agg, Aggaeus
+Zechariah = Zach, Zacharias
+Malachi = Mal, Malachias
+Matthew = Matt, Matthaeus
+Mark = Marc, Marcus
+Luke = Luc, Lucas
+John = Ioann, Ioannes
+The Acts = Act, Actus, Actus Apostolorum
+Romans = Rom, Romanos
+1 Corinthians = 1 Cor, 1 Corinthios
+2 Corinthians = 2 Cor, 2 Corinthios
+Galatians = Gal, Galatas
+Ephesians = Eph, Ephesios
+Philippians = Phil, Philippenses
+Colossians = Col, Colossenses
+1 Thessalonians = 1 Thess, 1 Thessalonicenses
+2 Thessalonians = 2 Thess, 2 Thessalonicenses
+1 Timothy = 1 Tim, 1 Timotheum
+2 Timothy = 2 Tim, 2 Timotheum
+Titus = Tit, Titum
+Philemon = Philem, Philemonem
+Hebrews = Hebr, Hebraeos
+James = Iac, Iacobi
+1 Peter = 1 Pet, 1 Petri
+2 Peter = 2 Pet, 2 Petri
+1 John = 1 Ioann, 1 Ioannis
+2 John = 2 Ioann, 2 Ioannis
+3 John = 3 Ioann, 3 Ioannis
+Jude = Iud, Iudae
+Revelation = Apoc, Apocalypsis
diff --git a/internal/bible/booktable.go b/internal/bible/booktable.go
index ac7ea95..ae005a5 100644
--- a/internal/bible/booktable.go
+++ b/internal/bible/booktable.go
@@ -6,13 +6,13 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/pelletier/go-toml/v2"
+	"github.com/lukaszkasprzak/lectio/internal/ini"
 )
 
-// booksFS embeds the built-in default book table (names + abbreviations per UI
-// language). Users override it per book via ~/.config/lectio/books.toml.
+// booksFS embeds the built-in default book table (names + abbreviations per
+// dialect: en/pl/la). Users override it per book via ~/.config/lectio/books.ini.
 //
-//go:embed books.toml
+//go:embed books.ini
 var booksFS embed.FS
 
 // BookInfo is one book's display data in one dialect, for `lectio --list` and
@@ -23,8 +23,8 @@ type BookInfo struct {
 	Shortcut  string // primary abbreviation in the dialect, e.g. "Jn" / "J"
 }
 
-// BookTable resolves book references and lists books per "dialect" -- a books.toml
-// section, keyed by the same codes as the UI languages ("en"/"pl"). It is built
+// BookTable resolves book references and lists books per "dialect" -- a books.ini
+// section, keyed by dialect ("en"/"pl"/"la"). It is built
 // from the embedded default merged with an optional user override.
 type BookTable struct {
 	forms   map[string]map[string][]string // dialect -> canonical -> forms (first=shortcut, last=name)
@@ -38,16 +38,16 @@ type BookTable struct {
 // It always returns a usable table; a non-nil error means userTOML was present
 // but unparseable (the returned table is defaults-only, so callers can warn and
 // proceed).
-func LoadBookTable(userTOML []byte) (*BookTable, error) {
+func LoadBookTable(userINI []byte) (*BookTable, error) {
 	def, err := parseBooks(mustReadEmbedded())
 	if err != nil {
-		return nil, fmt.Errorf("embedded books.toml: %w", err) // our bug, not the user's
+		return nil, fmt.Errorf("embedded books.ini: %w", err) // our bug, not the user's
 	}
 	var uerr error
-	if len(strings.TrimSpace(string(userTOML))) > 0 {
-		user, perr := parseBooks(userTOML)
+	if len(strings.TrimSpace(string(userINI))) > 0 {
+		user, perr := parseBooks(userINI)
 		if perr != nil {
-			uerr = fmt.Errorf("ignoring malformed books.toml: %w", perr)
+			uerr = fmt.Errorf("ignoring malformed books.ini: %w", perr)
 		} else {
 			for dialect, books := range user {
 				if def[dialect] == nil {
@@ -84,20 +84,32 @@ func LoadBookTable(userTOML []byte) (*BookTable, error) {
 }
 
 func mustReadEmbedded() []byte {
-	b, _ := booksFS.ReadFile("books.toml") // embedded: always present
+	b, _ := booksFS.ReadFile("books.ini") // embedded: always present
 	return b
 }
 
-// DefaultBooksTOML returns the embedded default books.toml (the seed the
+// DefaultBooksTOML returns the embedded default books.ini (the seed the
 // /settings editor shows when the user has no override yet).
-func DefaultBooksTOML() []byte { return mustReadEmbedded() }
+func DefaultBooksINI() []byte { return mustReadEmbedded() }
 
 func parseBooks(data []byte) (map[string]map[string][]string, error) {
-	var raw map[string]map[string][]string
-	if err := toml.Unmarshal(data, &raw); err != nil {
+	secs, err := ini.Parse(data)
+	if err != nil {
 		return nil, err
 	}
-	return raw, nil
+	out := map[string]map[string][]string{}
+	for _, s := range secs {
+		if s.Name == "" { // no top-level pairs in the book table
+			continue
+		}
+		if out[s.Name] == nil {
+			out[s.Name] = map[string][]string{}
+		}
+		for _, p := range s.Pairs {
+			out[s.Name][p.Key] = ini.List(p.Val)
+		}
+	}
+	return out, nil
 }
 
 // Books returns every book of the dialect in scriptural (canonOrder) order.
diff --git a/internal/bible/booktable_test.go b/internal/bible/booktable_test.go
index 2a57d80..2fdd891 100644
--- a/internal/bible/booktable_test.go
+++ b/internal/bible/booktable_test.go
@@ -97,7 +97,7 @@ func TestFormatRef(t *testing.T) {
 
 func TestBookTableMergeAndMalformed(t *testing.T) {
 	// User adds an alias "Jhn" to English John; other books stay default.
-	user := []byte("[en]\nJohn = [\"Jn\", \"Jhn\", \"John\"]\n")
+	user := []byte("[en]\nJohn = Jn, Jhn, John\n")
 	tbl, err := LoadBookTable(user)
 	if err != nil {
 		t.Fatalf("merge err: %v", err)
@@ -108,12 +108,12 @@ func TestBookTableMergeAndMalformed(t *testing.T) {
 	if got, ok := tbl.ParseRef("en", "Gen 1:1"); !ok || got != "Genesis 1:1" {
 		t.Errorf("unlisted book lost after merge: %q,%v", got, ok)
 	}
-	// Malformed user TOML -> non-nil error but a usable defaults table.
-	tbl2, err := LoadBookTable([]byte("this is not [valid toml"))
+	// Malformed user INI -> non-nil error but a usable defaults table.
+	tbl2, err := LoadBookTable([]byte("this is not valid ini"))
 	if err == nil {
-		t.Error("expected error for malformed user toml")
+		t.Error("expected error for malformed user ini")
 	}
 	if got, ok := tbl2.ParseRef("en", "Jn 3:16"); !ok || got != "John 3:16" {
-		t.Errorf("defaults unusable after malformed user toml: %q,%v", got, ok)
+		t.Errorf("defaults unusable after malformed user ini: %q,%v", got, ok)
 	}
 }