fix(llm): update column names to match expanded schema from main

Main branch (commit fdb0873) removed all terse gorm column tags, letting
GORM use snake_case derivation. This expanded abbreviated column names:
- budget_ct → budget_cents
- actual_ct → actual_cents
- amount_ct / tot_ct → total_cents
- last_serviced → last_serviced_at
- warranty_exp → warranty_expiry
- And many more (model_no, serial_no, int_mo, man_url, man_txt, etc.)

Updated LLM prompt code to use the new expanded names:
- Few-shot SQL examples (8 queries updated)
- Schema notes (maintenance scheduling, warranty column)
- Test fixtures and assertions (3 test files)

The `_cents` suffix pattern remains (rule still applies), just with
the full word instead of `_ct` abbreviation.

Refs fdb0873

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: cpcloud

internal/llm/prompt.go

@@ -255,9 +255,9 @@ RULES:
 
 const sqlSchemaNotes = `
 Notes:
-- Maintenance scheduling: next_due = date(last_serviced, '+' || interval_months || ' months')
+- Maintenance scheduling: next_due = date(last_serviced_at, '+' || interval_months || ' months')
 - Project statuses: ideating, planned, quoted, underway, delayed, completed, abandoned
-- Warranty expiry is in the warranty_exp column (date string)
+- Warranty expiry is in the warranty_expiry column (date string)
 - For case-insensitive text search, use UPPER() or LOWER() on both sides: WHERE LOWER(title) LIKE LOWER('%hvac%')`
 
 const sqlFewShot = `## Examples
@@ -266,31 +266,31 @@ User: How many projects are underway?
 SQL: SELECT COUNT(*) AS count FROM projects WHERE status = 'underway' AND deleted_at IS NULL
 
 User: What's my most expensive project?
-SQL: SELECT name, budget_ct / 100.0 AS budget_dollars FROM projects WHERE deleted_at IS NULL ORDER BY budget_ct DESC LIMIT 1
+SQL: SELECT name, budget_cents / 100.0 AS budget_dollars FROM projects WHERE deleted_at IS NULL ORDER BY budget_cents DESC LIMIT 1
 
 User: When is the HVAC filter due?
-SQL: SELECT m.name, m.last_serviced, m.interval_months, date(m.last_serviced, '+' || m.interval_months || ' months') AS next_due FROM maintenance_items m WHERE m.name LIKE '%HVAC%' AND m.deleted_at IS NULL
+SQL: SELECT m.name, m.last_serviced_at, m.interval_months, date(m.last_serviced_at, '+' || m.interval_months || ' months') AS next_due FROM maintenance_items m WHERE m.name LIKE '%HVAC%' AND m.deleted_at IS NULL
 
 User: Which appliances have expiring warranties in the next 90 days?
-SQL: SELECT name, warranty_exp FROM appliances WHERE warranty_exp IS NOT NULL AND warranty_exp BETWEEN date('now') AND date('now', '+90 days') AND deleted_at IS NULL
+SQL: SELECT name, warranty_expiry FROM appliances WHERE warranty_expiry IS NOT NULL AND warranty_expiry BETWEEN date('now') AND date('now', '+90 days') AND deleted_at IS NULL
 
 User: How much have I spent on plumbing?
-SQL: SELECT SUM(q.amount_ct) / 100.0 AS total_dollars FROM quotes q JOIN projects p ON q.project_id = p.id WHERE p.project_type = 'plumbing' AND p.deleted_at IS NULL AND q.deleted_at IS NULL
+SQL: SELECT SUM(q.total_cents) / 100.0 AS total_dollars FROM quotes q JOIN projects p ON q.project_id = p.id JOIN project_types pt ON p.project_type_id = pt.id WHERE pt.name = 'plumbing' AND p.deleted_at IS NULL AND q.deleted_at IS NULL
 
 User: Show me all maintenance items and when they're next due
-SQL: SELECT name, last_serviced, interval_months, date(last_serviced, '+' || interval_months || ' months') AS next_due FROM maintenance_items WHERE deleted_at IS NULL ORDER BY next_due
+SQL: SELECT name, last_serviced_at, interval_months, date(last_serviced_at, '+' || interval_months || ' months') AS next_due FROM maintenance_items WHERE deleted_at IS NULL ORDER BY next_due
 
 User: Which projects involve HVAC work?
 SQL: SELECT title, status, description FROM projects WHERE (LOWER(title) LIKE LOWER('%hvac%') OR LOWER(description) LIKE LOWER('%hvac%')) AND deleted_at IS NULL
 
 User: Show me total spending by project status
-SQL: SELECT status, SUM(actual_ct) / 100.0 AS total_dollars FROM projects WHERE deleted_at IS NULL GROUP BY status ORDER BY total_dollars DESC
+SQL: SELECT status, SUM(actual_cents) / 100.0 AS total_dollars FROM projects WHERE deleted_at IS NULL GROUP BY status ORDER BY total_dollars DESC
 
 User: Which vendors have given me the most quotes?
 SQL: SELECT v.name, COUNT(q.id) AS quote_count FROM vendors v JOIN quotes q ON v.id = q.vendor_id WHERE v.deleted_at IS NULL AND q.deleted_at IS NULL GROUP BY v.id, v.name ORDER BY quote_count DESC
 
 User: What's the average quote amount for each project type?
-SQL: SELECT pt.name AS project_type, AVG(q.total_ct) / 100.0 AS avg_quote_dollars FROM project_types pt JOIN projects p ON pt.id = p.project_type_id JOIN quotes q ON p.id = q.project_id WHERE p.deleted_at IS NULL AND q.deleted_at IS NULL GROUP BY pt.id, pt.name ORDER BY avg_quote_dollars DESC
+SQL: SELECT pt.name AS project_type, AVG(q.total_cents) / 100.0 AS avg_quote_dollars FROM project_types pt JOIN projects p ON pt.id = p.project_type_id JOIN quotes q ON p.id = q.project_id WHERE p.deleted_at IS NULL AND q.deleted_at IS NULL GROUP BY pt.id, pt.name ORDER BY avg_quote_dollars DESC
 
 Now generate SQL for the user's question.`
 

internal/llm/prompt_test.go

@@ -16,7 +16,7 @@ var testTables = []TableInfo{
 		Columns: []ColumnInfo{
 			{Name: "id", Type: "integer", PK: true},
 			{Name: "title", Type: "text", NotNull: true},
-			{Name: "budget_ct", Type: "integer"},
+			{Name: "budget_cents", Type: "integer"},
 			{Name: "status", Type: "text"},
 		},
 	},
@@ -76,14 +76,14 @@ func TestBuildSQLPromptIncludesDDL(t *testing.T) {
 	assert.Contains(t, prompt, "CREATE TABLE projects")
 	assert.Contains(t, prompt, "id integer PRIMARY KEY")
 	assert.Contains(t, prompt, "title text NOT NULL")
-	assert.Contains(t, prompt, "budget_ct integer")
+	assert.Contains(t, prompt, "budget_cents integer")
 	assert.Contains(t, prompt, "CREATE TABLE appliances")
 }
 
 func TestBuildSQLPromptIncludesFewShotExamples(t *testing.T) {
 	prompt := BuildSQLPrompt(testTables, testNow, "")
 	assert.Contains(t, prompt, "SELECT COUNT(*)")
-	assert.Contains(t, prompt, "budget_ct / 100.0")
+	assert.Contains(t, prompt, "budget_cents / 100.0")
 	assert.Contains(t, prompt, "deleted_at IS NULL")
 }
 

internal/llm/sqlfmt_test.go

@@ -24,17 +24,17 @@ func TestFormatSQLSingleColumn(t *testing.T) {
 
 func TestFormatSQLMultipleClauses(t *testing.T) {
 	got := FormatSQL(
-		"SELECT name, budget_ct / 100.0 AS budget FROM projects "+
+		"SELECT name, budget_cents / 100.0 AS budget FROM projects "+
 			"WHERE status = 'underway' AND deleted_at IS NULL "+
-			"ORDER BY budget_ct DESC LIMIT 5",
+			"ORDER BY budget_cents DESC LIMIT 5",
 		0,
 	)
 	expected := "SELECT name,\n" +
-		"  budget_ct / 100.0 AS budget\n" +
+		"  budget_cents / 100.0 AS budget\n" +
 		"FROM projects\n" +
 		"WHERE status = 'underway'\n" +
 		"  AND deleted_at IS NULL\n" +
-		"ORDER BY budget_ct DESC\n" +
+		"ORDER BY budget_cents DESC\n" +
 		"LIMIT 5"
 	assert.Equal(t, expected, got)
 }
@@ -56,12 +56,12 @@ func TestFormatSQLJoin(t *testing.T) {
 
 func TestFormatSQLSubquery(t *testing.T) {
 	got := FormatSQL(
-		"SELECT name FROM projects WHERE id IN (SELECT project_id FROM quotes WHERE amount_ct > 10000)",
+		"SELECT name FROM projects WHERE id IN (SELECT project_id FROM quotes WHERE total_cents > 10000)",
 		0,
 	)
 	assert.Contains(t, got, "SELECT name")
 	assert.Contains(t, got, "FROM projects")
-	assert.Contains(t, got, "WHERE id IN (SELECT project_id FROM quotes WHERE amount_ct > 10000)")
+	assert.Contains(t, got, "WHERE id IN (SELECT project_id FROM quotes WHERE total_cents > 10000)")
 }
 
 func TestFormatSQLGroupBy(t *testing.T) {
@@ -104,12 +104,12 @@ func TestFormatSQLPreservesStrings(t *testing.T) {
 
 func TestFormatSQLDateFunctions(t *testing.T) {
 	got := FormatSQL(
-		"SELECT name, date(last_serviced, '+' || interval_months || ' months') AS next_due "+
+		"SELECT name, date(last_serviced_at, '+' || interval_months || ' months') AS next_due "+
 			"FROM maintenance_items WHERE deleted_at IS NULL ORDER BY next_due",
 		0,
 	)
 	assert.Contains(t, got, "SELECT name")
-	assert.Contains(t, got, "date(last_serviced, '+' || interval_months || ' months') AS next_due")
+	assert.Contains(t, got, "date(last_serviced_at, '+' || interval_months || ' months') AS next_due")
 	assert.Contains(t, got, "FROM maintenance_items")
 	assert.Contains(t, got, "ORDER BY next_due")
 }
@@ -128,7 +128,7 @@ func TestFormatSQLAlreadyFormatted(t *testing.T) {
 
 func TestFormatSQLBetween(t *testing.T) {
 	got := FormatSQL(
-		"SELECT name FROM appliances WHERE warranty_exp BETWEEN date('now') AND date('now', '+90 days')",
+		"SELECT name FROM appliances WHERE warranty_expiry BETWEEN date('now') AND date('now', '+90 days')",
 		0,
 	)
 	assert.Contains(t, got, "BETWEEN")
@@ -137,12 +137,12 @@ func TestFormatSQLBetween(t *testing.T) {
 
 func TestFormatSQLAggregateWithJoin(t *testing.T) {
 	got := FormatSQL(
-		"SELECT SUM(q.amount_ct) / 100.0 AS total FROM quotes q "+
+		"SELECT SUM(q.total_cents) / 100.0 AS total FROM quotes q "+
 			"JOIN projects p ON q.project_id = p.id "+
 			"WHERE p.deleted_at IS NULL AND q.deleted_at IS NULL",
 		0,
 	)
-	expected := "SELECT SUM(q.amount_ct) / 100.0 AS total\n" +
+	expected := "SELECT SUM(q.total_cents) / 100.0 AS total\n" +
 		"FROM quotes q\n" +
 		"JOIN projects p\nON q.project_id = p.id\n" +
 		"WHERE p.deleted_at IS NULL\n" +
@@ -152,7 +152,7 @@ func TestFormatSQLAggregateWithJoin(t *testing.T) {
 
 func TestFormatSQLWrapsLongLines(t *testing.T) {
 	got := FormatSQL(
-		"SELECT name, date(last_serviced, '+' || interval_months || ' months') AS next_due "+
+		"SELECT name, date(last_serviced_at, '+' || interval_months || ' months') AS next_due "+
 			"FROM maintenance_items WHERE deleted_at IS NULL ORDER BY next_due",
 		40,
 	)