Remove manual tagging

A tag could come from two places: rules.toml, or the TUI's t key, which wrote
manual_tag with COALESCE(manual_tag, rule_tag) deciding the winner. That split
paid for itself in the first invariant of the codebase, in ClearOverrides and
the c key, in the * marker on the tag column, and in the one exception to a
disposable index -- a tag set by hand was the only thing in index.db that the
statements could not reproduce.

Now rules.toml decides every tag. The index is derived entirely from the
statements plus that file, so deleting it and re-importing gets back exactly
what was there, and retag has nothing to be careful of. Tagging a one-off means
writing a narrow rule on screen 4, which previews what the glob catches before
it is saved.

A manual tag in an existing index is dropped along with the column the first
time this build opens it, and those rows read as whatever the rules say, or as
untagged. TestManualTagSurvivesRetag guarded the invariant that has just been
removed; TestRetagRewritesEveryTag replaces it with the one that took its
place, and keeps Retag itself covered.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

internal/tui/tui.go

@@ -1,5 +1,5 @@
-// Package tui is the terminal interface: browse accounts, tag transactions,
-// and see where the money went.
+// Package tui is the terminal interface: browse accounts, write the rules that
+// tag transactions, and see where the money went.
 package tui
 
 import (
@@ -47,12 +47,11 @@ const (
 )
 
 // input is the modal state: the transaction list is read-only until the user
-// starts typing a tag or a search.
+// starts typing a search.
 type input int
 
 const (
 	inputNone input = iota
-	inputTag
 	inputSearch
 )
 
@@ -267,16 +266,12 @@ func (m *Model) reloadTxns() error {
 
 	rows := make([]table.Row, 0, len(txns))
 	for _, t := range txns {
-		tag := t.Tag()
-		if tag != "" && t.ManualTag != "" {
-			tag += "*" // marks a manual override
-		}
 		rows = append(rows, table.Row{
-			t.Date, t.AccountSlug, t.FormatAmount(), tag, t.Description,
+			t.Date, t.AccountSlug, t.FormatAmount(), t.RuleTag, t.Description,
 		})
 	}
-	// Keep the cursor in range after the row count shrinks (e.g. tagging the
-	// last untagged row while the untagged filter is on).
+	// Keep the cursor in range after the row count shrinks (e.g. a new rule
+	// tagging the last untagged row while the untagged filter is on).
 	cursor := m.txnTable.Cursor()
 	m.txnTable.SetRows(rows)
 	if cursor >= len(rows) {
@@ -989,20 +984,6 @@ func (m *Model) updateInput(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.text.SetValue("")
 
 		switch mode {
-		case inputTag:
-			t, ok := m.selected()
-			if !ok {
-				return m, nil
-			}
-			if err := m.db.SetManualTag(t.ID, value); err != nil {
-				m.err = err
-				return m, nil
-			}
-			if value == "" {
-				m.status = "cleared manual tag"
-			} else {
-				m.status = "tagged as " + value
-			}
 		case inputSearch:
 			m.filter.Search = value
 			m.status = "search: " + value
@@ -1084,20 +1065,6 @@ func (m *Model) updateNormal(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.err = m.reloadTxns()
 		return m, nil
 
-	case "t":
-		if m.view != viewTxns {
-			return m, nil
-		}
-		t, ok := m.selected()
-		if !ok {
-			return m, nil
-		}
-		m.input = inputTag
-		m.text.SetValue(t.ManualTag)
-		m.text.CursorEnd()
-		m.text.Focus()
-		return m, nil
-
 	case "/":
 		m.view = viewTxns
 		m.input = inputSearch
@@ -1106,23 +1073,6 @@ func (m *Model) updateNormal(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.text.Focus()
 		return m, nil
 
-	case "c":
-		// Drop the manual tag and fall back to what the rules say.
-		if m.view != viewTxns {
-			return m, nil
-		}
-		t, ok := m.selected()
-		if !ok {
-			return m, nil
-		}
-		if err := m.db.ClearOverrides(t.ID); err != nil {
-			m.err = err
-			return m, nil
-		}
-		m.status = "manual overrides cleared"
-		m.err = m.reloadTxns()
-		return m, nil
-
 	case "r":
 		if m.importing {
 			m.status = "import in progress…"
@@ -1189,8 +1139,6 @@ func (m *Model) View() string {
 	switch {
 	case m.importing:
 		b.WriteString(statusStyle.Render(m.spinner.View() + m.importingLabel()))
-	case m.input == inputTag:
-		b.WriteString(statusStyle.Render("tag: ") + m.text.View())
 	case m.input == inputSearch:
 		b.WriteString(statusStyle.Render("search: ") + m.text.View())
 	case m.err != nil:
@@ -1389,6 +1337,6 @@ func (m *Model) help() string {
 	case viewReport:
 		return "1 accounts · 2 transactions · 4 new rule · 5 rules · u untagged · a all accounts · q quit"
 	default:
-		return "t tag · c clear · / search · u untagged · a all · i import · r retag · 4 new rule · 5 rules · q quit"
+		return "4 new rule · / search · u untagged · a all · i import · r retag · 5 rules · q quit"
 	}
 }