Ground new Regulars in the background and add recipe fix-up API

Creating a Regular now enqueues a ground_dinner job and returns at once
with its grounding_job_id. The job grounds the dinner's recipe_url with
GroundURL, else its name with Ground, and sets grounding_status grounded
(recipe, photo, method, minutes, difficulty) or failed with a
grounding_error reason code (migration 0009). It writes only a dinner
still pending, so a fix made meanwhile wins.

GET /api/v1/dinners/{id}/recipe-candidates returns up to 3 ranked
candidates {candidate_id, title, site_name, photo_url, minutes} without
downloading photos or running the model. POST /api/v1/dinners/{id}/ground
takes exactly one of {candidate_id}, {recipe_url} or {manual: {...}} and
sets grounded or manual.

PhotoCache takes an ImageFetcher interface and recipestest provides fakes
so other packages can test grounding with fake search, fetch and model.
main wires the Grounder with normalize_recipe over the AI settings.

Maestro task: 0cbaa5bf-8be4-4cbd-aab2-891e7f1bc2b5

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/db/dinners.sql.go

@@ -16,7 +16,7 @@ SET status = 'archived',
 	updated_by = ?,
 	updated_at = ?
 WHERE id = ?
-RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url
+RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error
 `
 
 type ArchiveDinnerParams struct {
@@ -47,6 +47,7 @@ func (q *Queries) ArchiveDinner(ctx context.Context, arg ArchiveDinnerParams) (D
 		&i.CreatedAt,
 		&i.UpdatedAt,
 		&i.RecipeUrl,
+		&i.GroundingError,
 	)
 	return i, err
 }
@@ -61,7 +62,7 @@ INSERT INTO dinners (
 	?, ?, ?, ?, ?, ?,
 	?, ?, ?, ?
 )
-RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url
+RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error
 `
 
 type CreateDinnerParams struct {
@@ -123,12 +124,37 @@ func (q *Queries) CreateDinner(ctx context.Context, arg CreateDinnerParams) (Din
 		&i.CreatedAt,
 		&i.UpdatedAt,
 		&i.RecipeUrl,
+		&i.GroundingError,
 	)
 	return i, err
 }
 
+const failPendingDinnerGrounding = `-- name: FailPendingDinnerGrounding :execrows
+UPDATE dinners
+SET grounding_status = 'failed',
+	grounding_error = ?,
+	updated_at = ?
+WHERE id = ? AND grounding_status = 'pending'
+`
+
+type FailPendingDinnerGroundingParams struct {
+	GroundingError sql.NullString
+	UpdatedAt      string
+	ID             string
+}
+
+// Records why the background grounding of a dinner still pending failed; a
+// dinner grounded some other way meanwhile is left as it is (0 rows).
+func (q *Queries) FailPendingDinnerGrounding(ctx context.Context, arg FailPendingDinnerGroundingParams) (int64, error) {
+	result, err := q.db.ExecContext(ctx, failPendingDinnerGrounding, arg.GroundingError, arg.UpdatedAt, arg.ID)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected()
+}
+
 const getDinner = `-- name: GetDinner :one
-SELECT id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url FROM dinners
+SELECT id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error FROM dinners
 WHERE id = ?
 `
 
@@ -153,12 +179,119 @@ func (q *Queries) GetDinner(ctx context.Context, id string) (Dinner, error) {
 		&i.CreatedAt,
 		&i.UpdatedAt,
 		&i.RecipeUrl,
+		&i.GroundingError,
 	)
 	return i, err
 }
 
+const groundDinner = `-- name: GroundDinner :one
+UPDATE dinners
+SET recipe_id = ?,
+	photo_id = ?,
+	method = ?,
+	minutes_total = ?,
+	difficulty = ?,
+	grounding_status = ?,
+	grounding_error = NULL,
+	updated_by = ?,
+	updated_at = ?
+WHERE id = ?
+RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error
+`
+
+type GroundDinnerParams struct {
+	RecipeID        sql.NullString
+	PhotoID         sql.NullString
+	Method          sql.NullString
+	MinutesTotal    sql.NullInt64
+	Difficulty      sql.NullString
+	GroundingStatus string
+	UpdatedBy       sql.NullString
+	UpdatedAt       string
+	ID              string
+}
+
+// Records a dinner's grounding (grounded or manual) and clears any
+// grounding_error. An unknown id returns sql.ErrNoRows.
+func (q *Queries) GroundDinner(ctx context.Context, arg GroundDinnerParams) (Dinner, error) {
+	row := q.db.QueryRowContext(ctx, groundDinner,
+		arg.RecipeID,
+		arg.PhotoID,
+		arg.Method,
+		arg.MinutesTotal,
+		arg.Difficulty,
+		arg.GroundingStatus,
+		arg.UpdatedBy,
+		arg.UpdatedAt,
+		arg.ID,
+	)
+	var i Dinner
+	err := row.Scan(
+		&i.ID,
+		&i.Name,
+		&i.NormalizedName,
+		&i.Status,
+		&i.Origin,
+		&i.Method,
+		&i.MinutesTotal,
+		&i.Difficulty,
+		&i.Cuisine,
+		&i.IsFavorite,
+		&i.RecipeID,
+		&i.PhotoID,
+		&i.GroundingStatus,
+		&i.UpdatedBy,
+		&i.CreatedAt,
+		&i.UpdatedAt,
+		&i.RecipeUrl,
+		&i.GroundingError,
+	)
+	return i, err
+}
+
+const groundPendingDinner = `-- name: GroundPendingDinner :execrows
+UPDATE dinners
+SET recipe_id = ?,
+	photo_id = ?,
+	method = ?,
+	minutes_total = ?,
+	difficulty = ?,
+	grounding_status = 'grounded',
+	grounding_error = NULL,
+	updated_at = ?
+WHERE id = ? AND grounding_status = 'pending'
+`
+
+type GroundPendingDinnerParams struct {
+	RecipeID     sql.NullString
+	PhotoID      sql.NullString
+	Method       sql.NullString
+	MinutesTotal sql.NullInt64
+	Difficulty   sql.NullString
+	UpdatedAt    string
+	ID           string
+}
+
+// Records the background grounding of a dinner still pending; a dinner
+// grounded some other way meanwhile is left as it is (0 rows).
+func (q *Queries) GroundPendingDinner(ctx context.Context, arg GroundPendingDinnerParams) (int64, error) {
+	result, err := q.db.ExecContext(ctx, groundPendingDinner,
+		arg.RecipeID,
+		arg.PhotoID,
+		arg.Method,
+		arg.MinutesTotal,
+		arg.Difficulty,
+		arg.UpdatedAt,
+		arg.ID,
+	)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected()
+}
+
 const listDinnersByStatus = `-- name: ListDinnersByStatus :many
-SELECT id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url FROM dinners
+SELECT id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error FROM dinners
 WHERE status = ?
 ORDER BY normalized_name, id
 `
@@ -190,6 +323,7 @@ func (q *Queries) ListDinnersByStatus(ctx context.Context, status string) ([]Din
 			&i.CreatedAt,
 			&i.UpdatedAt,
 			&i.RecipeUrl,
+			&i.GroundingError,
 		); err != nil {
 			return nil, err
 		}
@@ -205,7 +339,7 @@ func (q *Queries) ListDinnersByStatus(ctx context.Context, status string) ([]Din
 }
 
 const listUnarchivedDinners = `-- name: ListUnarchivedDinners :many
-SELECT id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url FROM dinners
+SELECT id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error FROM dinners
 WHERE status <> 'archived'
 ORDER BY id
 `
@@ -238,6 +372,7 @@ func (q *Queries) ListUnarchivedDinners(ctx context.Context) ([]Dinner, error) {
 			&i.CreatedAt,
 			&i.UpdatedAt,
 			&i.RecipeUrl,
+			&i.GroundingError,
 		); err != nil {
 			return nil, err
 		}
@@ -258,7 +393,7 @@ SET is_favorite = ?,
 	updated_by = ?,
 	updated_at = ?
 WHERE id = ?
-RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url
+RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error
 `
 
 type SetDinnerFavoriteParams struct {
@@ -295,6 +430,7 @@ func (q *Queries) SetDinnerFavorite(ctx context.Context, arg SetDinnerFavoritePa
 		&i.CreatedAt,
 		&i.UpdatedAt,
 		&i.RecipeUrl,
+		&i.GroundingError,
 	)
 	return i, err
 }
@@ -305,7 +441,7 @@ SET is_favorite = 1 - is_favorite,
 	updated_by = ?,
 	updated_at = ?
 WHERE id = ?
-RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url
+RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error
 `
 
 type ToggleDinnerFavoriteParams struct {
@@ -336,6 +472,7 @@ func (q *Queries) ToggleDinnerFavorite(ctx context.Context, arg ToggleDinnerFavo
 		&i.CreatedAt,
 		&i.UpdatedAt,
 		&i.RecipeUrl,
+		&i.GroundingError,
 	)
 	return i, err
 }
@@ -356,7 +493,7 @@ SET name = ?,
 	updated_by = ?,
 	updated_at = ?
 WHERE id = ?
-RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url
+RETURNING id, name, normalized_name, status, origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, photo_id, grounding_status, updated_by, created_at, updated_at, recipe_url, grounding_error
 `
 
 type UpdateDinnerParams struct {
@@ -413,6 +550,7 @@ func (q *Queries) UpdateDinner(ctx context.Context, arg UpdateDinnerParams) (Din
 		&i.CreatedAt,
 		&i.UpdatedAt,
 		&i.RecipeUrl,
+		&i.GroundingError,
 	)
 	return i, err
 }