Fix Feature 12 review findings F2–F8 on Regular grounding and onboarding

Grounding (F2–F5):
- Each ground_dinner job carries the dinner's new grounding_revision
  (migration 0010). Renaming a pending Regular raises the revision, and a
  job only grounds and writes a dinner still at its revision, so a queued
  original job no longer grounds the new name or decides the outcome.
- Background grounding keeps a method, minutes or difficulty a member saved
  while the Regular was pending, and fills only those left empty.
- Grounding by hand clears the pasted recipe_url, and link deduplication
  uses the source_url of the attached recipe, else the pending link.
- Archived dinners are not grounded: the job checks before any search,
  fetch or model call, and its final update requires an unarchived row.

Onboarding (F6, F7):
- Step 3 shows "Add Regulars" back to step 2 when the server refuses to
  finish with fewer than three Regulars.
- Common picks are hidden by a copy of harness Normalize/Similar, checked
  against the same shared cases as the Go code.

Docs (F8): ARCHITECTURE.md covers the three-Regular minimum, step-3
recovery, the grounding revision and the dedupe rules.

F1 was fixed in 1304487; its test now also asserts the old link is never
grounded and recipe_url stays cleared.

Maestro task 5037ff86-181d-448e-927b-c2fd2258a25d.

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

docs/ARCHITECTURE.md

@@ -96,7 +96,7 @@ Columns ending in `_ct` hold AES-256-GCM ciphertext (via `secretbox`).
 | `recipe_ingredients` | recipe_id, position, raw_text, name, qty, unit, note. |
 | `recipe_steps` | recipe_id, position, text. |
 | `photos` | source_url, local_path, width, height, sha256, fetched_at. |
-| `dinners` | The meal record and its lifecycle: name, normalized_name, status (`suggested` / `quest_log` / `tried` / `regular` / `archived`), origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, recipe_url (a pasted recipe link awaiting grounding), photo_id, grounding_status (`pending` / `grounded` / `failed` / `manual`), grounding_error (why grounding failed), updated_by. |
+| `dinners` | The meal record and its lifecycle: name, normalized_name, status (`suggested` / `quest_log` / `tried` / `regular` / `archived`), origin, method, minutes_total, difficulty, cuisine, is_favorite, recipe_id, recipe_url (a pasted recipe link awaiting grounding), photo_id, grounding_status (`pending` / `grounded` / `failed` / `manual`), grounding_error (why grounding failed), grounding_revision (raised when a pending dinner is renamed, so only the latest `ground_dinner` job may write it), updated_by. |
 | `suggestion_batches` | trigger, status, ai_run_id. |
 | `suggestions` | dinner_id, batch_id, reason, cited_regular_ids (JSON), status, decided_at. |
 | `week_plans` | week_start (unique), status (`draft` / `synced` / `changed`), ai_note, ai_run_id, calendar_synced_at. |
@@ -187,8 +187,10 @@ automatic** (D-021).
   "Beef stew"); a link that names nothing is 400 — add it by name. A name
   is trimmed, at most 120 characters and must keep a word after
   `harness.Normalize`, which sets `normalized_name`. A name
-  `harness.Similar` to an unarchived dinner's, or a link one already has,
-  is 409 `duplicate_dinner`; archived names may be added again.
+  `harness.Similar` to an unarchived dinner's, or a link one already has
+  (the source_url of the recipe it is grounded in, else its pasted
+  `recipe_url`), is 409 `duplicate_dinner`; archived names may be added
+  again.
   `GET /api/v1/dinners?status=regular|quest_log` returns
   `{dinners: [...]}` ordered by normalized name, each with `photo_url`
   (`/media/photos/{photo_id}-400.jpg`, or null) and `grounding_status`;
@@ -211,11 +213,19 @@ automatic** (D-021).
   `failed` with `grounding_error` — also the job's failure code — one of
   `no_recipe_found`, `recipe_unusable` (the pasted link), `search_not_configured`,
   `search_failed`, `ai_failed`, `interrupted` (the server stopped) or
-  `grounding_error`. It only writes a dinner still `pending`, so a fix-up
-  made meanwhile wins. At boot, after the job runner fails the jobs a
-  previous process left running, every dinner still `pending` with no
-  `ground_dinner` job queued or running is set `failed` with `interrupted`,
-  so no dinner stays pending with nothing left to ground it.
+  `grounding_error`. Each job carries the dinner's `grounding_revision`
+  from when it was enqueued; renaming a `pending` dinner clears its
+  `recipe_url`, raises the revision and enqueues a job for the new name.
+  A job for a dinner archived, no longer `pending` or at another revision
+  does no work, and a job only writes a dinner still unarchived, `pending`
+  and at its revision, so a fix-up made meanwhile wins and an earlier job
+  for an old name — queued or running — never decides the outcome. A
+  method, minutes_total or difficulty a member saved while the dinner was
+  `pending` is kept; grounding fills only those left empty. At boot, after
+  the job runner fails the jobs a previous process left running, every
+  dinner still `pending` with no `ground_dinner` job for its revision
+  queued or running is set `failed` with `interrupted`, so no dinner stays
+  pending with nothing left to ground it.
   `GET /api/v1/dinners/{id}/recipe-candidates`
   searches for the dinner's name and returns `{candidates: [{candidate_id,
   title, site_name, photo_url, minutes}]}`, at most 3, ranked as `Ground`
@@ -229,8 +239,9 @@ automatic** (D-021).
   — no model runs — as a `recipes` row whose source_url is
   `mealquest:manual:{recipe_id}` and whose raw_jsonld is a schema.org
   Recipe built from it, and sets `manual` with its method and minutes, no
-  photo and the dinner's difficulty unchanged. It answers 200 with the
-  dinner; an invalid body is 400, an unknown dinner 404, a page that cannot
+  photo and the dinner's difficulty unchanged. Either clears the dinner's
+  pasted `recipe_url`: the recipe chosen replaces it. It answers 200 with
+  the dinner; an invalid body is 400, an unknown dinner 404, a page that cannot
   ground it 422 `ungroundable` (the dinner is unchanged), recipe search not
   set up 409 `not_configured`, a search or model failure 502
   `search_failed` / `ai_failed` (only the reason code is logged, never the
@@ -488,13 +499,22 @@ First run: while `household_settings.onboarding_completed_at` (read from
 `GET /api/v1/settings/household`) is null, every route redirects to
 `/onboarding`. Onboarding is a full screen outside the app shell, in three
 steps: the welcome (`/onboarding`), the Regulars (`/onboarding/regulars`,
-mock 1h, adding and archiving through the dinners API optimistically) and
+mock 1h, adding and archiving through the dinners API optimistically; Next
+waits for three saved Regulars, and a common pick is not offered once a
+Regular has a name `harness.Similar` to it — the PWA's copy of the name
+rules in `web/src/dinners/names.ts` runs the same cases,
+`internal/ai/harness/testdata/dedupe_cases.json`, as the server's) and
 notifications (`/onboarding/notifications`: what MealQuest notifies about,
 the iOS install hint, "Turn on notifications" and "Maybe later"). Either
 button sends `PATCH /api/v1/settings/household` with
 `{"onboarding_completed": true}`; the server sets `onboarding_completed_at`
 to the time of that update (keeping the first time if it is already set;
 the field itself is read-only and `false` is refused) and the app goes Home.
+Completing needs at least three Regulars (`household.MinRegulars`); with
+fewer the server answers 400 `invalid_settings` naming
+`onboarding_completed` and changes nothing. Step 3 can be reached with
+fewer — by its URL, or after another member removes a Regular — so it then
+shows the server's reason with an "Add Regulars" button back to step 2.
 Notification permission is never asked for on page load; until Feature 19
 wires Web Push, "Turn on notifications" asks for nothing. Offline on the saved pages the
 settings cannot be read (the service worker never caches `/api/v1/settings`),

internal/ai/harness/dedupe_test.go

@@ -1,10 +1,45 @@
 package harness
 
 import (
+	"encoding/json"
+	"os"
 	"testing"
 	"unicode"
 )
 
+// TestSharedDedupeCases runs testdata/dedupe_cases.json, which the PWA's
+// copy of Normalize and Similar (web/src/dinners/names.ts) runs too, so the
+// two cannot drift apart on these names.
+func TestSharedDedupeCases(t *testing.T) {
+	raw, err := os.ReadFile("testdata/dedupe_cases.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var cases struct {
+		Normalize []struct{ Name, Want string }
+		Similar   []struct {
+			A, B string
+			Want bool
+		}
+	}
+	if err := json.Unmarshal(raw, &cases); err != nil {
+		t.Fatal(err)
+	}
+	if len(cases.Normalize) == 0 || len(cases.Similar) == 0 {
+		t.Fatal("dedupe_cases.json has no cases")
+	}
+	for _, c := range cases.Normalize {
+		if got := Normalize(c.Name); got != c.Want {
+			t.Errorf("Normalize(%q) = %q, want %q", c.Name, got, c.Want)
+		}
+	}
+	for _, c := range cases.Similar {
+		if got := Similar(c.A, c.B); got != c.Want {
+			t.Errorf("Similar(%q, %q) = %v, want %v", c.A, c.B, got, c.Want)
+		}
+	}
+}
+
 func TestNormalize(t *testing.T) {
 	tests := []struct {
 		name, want string

internal/ai/harness/testdata/dedupe_cases.json

@@ -0,0 +1,119 @@
+{
+  "normalize": [
+    {
+      "name": "Easy Chicken Tikka-Masala!",
+      "want": "chicken tikka masala"
+    },
+    {
+      "name": "  Homemade   Chili ",
+      "want": "chili"
+    },
+    {
+      "name": "Grandma's Stew",
+      "want": "grandmas stew"
+    },
+    {
+      "name": "Grandma’s Stew",
+      "want": "grandmas stew"
+    },
+    {
+      "name": "İskender Kebab",
+      "want": "iskender kebab"
+    },
+    {
+      "name": "Paella à la Valenciana",
+      "want": "paella la valenciana"
+    },
+    {
+      "name": "Crème Brûlée",
+      "want": "creme brulee"
+    },
+    {
+      "name": "Crème Brûlée",
+      "want": "creme brulee"
+    },
+    {
+      "name": "Smørrebrød",
+      "want": "smorrebrod"
+    },
+    {
+      "name": "Pierogi z Łososiem",
+      "want": "pierogi z lososiem"
+    },
+    {
+      "name": "Straße Würstchen",
+      "want": "strasse wurstchen"
+    },
+    {
+      "name": "Œufs en Cocotte",
+      "want": "oeufs en cocotte"
+    },
+    {
+      "name": "Æbleskiver",
+      "want": "aebleskiver"
+    },
+    {
+      "name": "Phở Bò",
+      "want": "pho bo"
+    },
+    {
+      "name": "The Best Quick Recipe",
+      "want": ""
+    },
+    {
+      "name": "Chicken stir-fry",
+      "want": "chicken stir fry"
+    },
+    {
+      "name": "7-layer dip",
+      "want": "7 layer dip"
+    }
+  ],
+  "similar": [
+    {
+      "a": "Homemade chili",
+      "b": "Chili",
+      "want": true
+    },
+    {
+      "a": "Easy Spaghetti Bolognese",
+      "b": "spaghetti bolognese",
+      "want": true
+    },
+    {
+      "a": "Chicken stir fry",
+      "b": "Chicken stir-fry",
+      "want": true
+    },
+    {
+      "a": "Crème brûlée",
+      "b": "Creme brulee",
+      "want": true
+    },
+    {
+      "a": "Smørrebrød",
+      "b": "smorrebrod",
+      "want": true
+    },
+    {
+      "a": "Beef tacos",
+      "b": "Fish tacos",
+      "want": false
+    },
+    {
+      "a": "Chili",
+      "b": "White chicken chili",
+      "want": false
+    },
+    {
+      "a": "Pot roast",
+      "b": "Roast",
+      "want": false
+    },
+    {
+      "a": "The best",
+      "b": "Easy recipe",
+      "want": false
+    }
+  ]
+}

internal/db/db_test.go

@@ -268,7 +268,7 @@ func TestDinners(t *testing.T) {
 	}
 	var unarchivedIDs []string
 	for _, d := range unarchived {
-		unarchivedIDs = append(unarchivedIDs, d.ID)
+		unarchivedIDs = append(unarchivedIDs, d.Dinner.ID)
 	}
 	assertIDs(t, "unarchived", unarchivedIDs, other.ID, third.ID)
 	_, err = q.ArchiveDinner(ctx, db.ArchiveDinnerParams{ID: "missing", UpdatedAt: archivedAt})

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, grounding_error
+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, grounding_revision
 `
 
 type ArchiveDinnerParams struct {
@@ -48,6 +48,7 @@ func (q *Queries) ArchiveDinner(ctx context.Context, arg ArchiveDinnerParams) (D
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }
@@ -75,7 +76,7 @@ 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, grounding_error
+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, grounding_revision
 `
 
 type CreateDinnerParams struct {
@@ -138,6 +139,7 @@ func (q *Queries) CreateDinner(ctx context.Context, arg CreateDinnerParams) (Din
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }
@@ -153,6 +155,7 @@ WHERE grounding_status = 'pending'
 		WHERE jobs.kind = ?3
 			AND jobs.status IN ('queued', 'running')
 			AND json_extract(jobs.payload, '$.dinner_id') = dinners.id
+			AND json_extract(jobs.payload, '$.revision') = dinners.grounding_revision
 	)
 `
 
@@ -162,10 +165,10 @@ type FailOrphanedPendingDinnerGroundingsParams struct {
 	Kind           string
 }
 
-// Fails every dinner still pending whose grounding job is no longer queued
-// or running: the process stopped before the job, or before its handler
-// recorded a result. Run at boot, after the job runner fails the jobs a
-// previous process left running.
+// Fails every dinner still pending whose grounding job for its current
+// grounding_revision is no longer queued or running: the process stopped
+// before the job, or before its handler recorded a result. Run at boot,
+// after the job runner fails the jobs a previous process left running.
 func (q *Queries) FailOrphanedPendingDinnerGroundings(ctx context.Context, arg FailOrphanedPendingDinnerGroundingsParams) (int64, error) {
 	result, err := q.db.ExecContext(ctx, failOrphanedPendingDinnerGroundings, arg.GroundingError, arg.UpdatedAt, arg.Kind)
 	if err != nil {
@@ -179,25 +182,29 @@ UPDATE dinners
 SET grounding_status = 'failed',
 	grounding_error = ?,
 	updated_at = ?
-WHERE id = ? AND grounding_status = 'pending' AND normalized_name = ?
+WHERE id = ?
+	AND status <> 'archived'
+	AND grounding_status = 'pending'
+	AND grounding_revision = ?
 `
 
 type FailPendingDinnerGroundingParams struct {
-	GroundingError sql.NullString
-	UpdatedAt      string
-	ID             string
-	NormalizedName string
+	GroundingError    sql.NullString
+	UpdatedAt         string
+	ID                string
+	GroundingRevision int64
 }
 
-// Records why the background grounding of a dinner still pending under the
-// normalized name it was grounded for failed; a dinner grounded some other
-// way or renamed meanwhile is left as it is (0 rows).
+// Records why the background grounding of an unarchived dinner still
+// pending at the grounding_revision it was grounded for failed; a dinner
+// grounded some other way, renamed or archived 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,
-		arg.NormalizedName,
+		arg.GroundingRevision,
 	)
 	if err != nil {
 		return 0, err
@@ -206,7 +213,7 @@ func (q *Queries) FailPendingDinnerGrounding(ctx context.Context, arg FailPendin
 }
 
 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, grounding_error 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, grounding_revision FROM dinners
 WHERE id = ?
 `
 
@@ -232,6 +239,7 @@ func (q *Queries) GetDinner(ctx context.Context, id string) (Dinner, error) {
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }
@@ -239,6 +247,7 @@ func (q *Queries) GetDinner(ctx context.Context, id string) (Dinner, error) {
 const groundDinner = `-- name: GroundDinner :one
 UPDATE dinners
 SET recipe_id = ?,
+	recipe_url = NULL,
 	photo_id = ?,
 	method = ?,
 	minutes_total = ?,
@@ -248,7 +257,7 @@ SET recipe_id = ?,
 	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
+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, grounding_revision
 `
 
 type GroundDinnerParams struct {
@@ -263,8 +272,9 @@ type GroundDinnerParams struct {
 	ID              string
 }
 
-// Records a dinner's grounding (grounded or manual) and clears any
-// grounding_error. An unknown id returns sql.ErrNoRows.
+// Records a dinner's grounding by hand (grounded or manual) and clears any
+// grounding_error and pasted recipe_url: the recipe chosen replaces the
+// link. 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,
@@ -297,37 +307,43 @@ func (q *Queries) GroundDinner(ctx context.Context, arg GroundDinnerParams) (Din
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }
 
 const groundPendingDinner = `-- name: GroundPendingDinner :execrows
 UPDATE dinners
-SET recipe_id = ?,
-	photo_id = ?,
-	method = ?,
-	minutes_total = ?,
-	difficulty = ?,
+SET recipe_id = ?1,
+	photo_id = ?2,
+	method = COALESCE(method, ?3),
+	minutes_total = COALESCE(minutes_total, ?4),
+	difficulty = COALESCE(difficulty, ?5),
 	grounding_status = 'grounded',
 	grounding_error = NULL,
-	updated_at = ?
-WHERE id = ? AND grounding_status = 'pending' AND normalized_name = ?
+	updated_at = ?6
+WHERE id = ?7
+	AND status <> 'archived'
+	AND grounding_status = 'pending'
+	AND grounding_revision = ?8
 `
 
 type GroundPendingDinnerParams struct {
-	RecipeID       sql.NullString
-	PhotoID        sql.NullString
-	Method         sql.NullString
-	MinutesTotal   sql.NullInt64
-	Difficulty     sql.NullString
-	UpdatedAt      string
-	ID             string
-	NormalizedName string
+	RecipeID          sql.NullString
+	PhotoID           sql.NullString
+	Method            sql.NullString
+	MinutesTotal      sql.NullInt64
+	Difficulty        sql.NullString
+	UpdatedAt         string
+	ID                string
+	GroundingRevision int64
 }
 
-// Records the background grounding of a dinner still pending under the
-// normalized name it was grounded for; a dinner grounded some other way or
-// renamed meanwhile is left as it is (0 rows).
+// Records the background grounding of an unarchived dinner still pending at
+// the grounding_revision it was grounded for; a dinner grounded some other
+// way, renamed or archived meanwhile is left as it is (0 rows). A method,
+// minutes_total or difficulty already set is kept: a pending dinner has
+// them only when a member edited them while it was grounding.
 func (q *Queries) GroundPendingDinner(ctx context.Context, arg GroundPendingDinnerParams) (int64, error) {
 	result, err := q.db.ExecContext(ctx, groundPendingDinner,
 		arg.RecipeID,
@@ -337,7 +353,7 @@ func (q *Queries) GroundPendingDinner(ctx context.Context, arg GroundPendingDinn
 		arg.Difficulty,
 		arg.UpdatedAt,
 		arg.ID,
-		arg.NormalizedName,
+		arg.GroundingRevision,
 	)
 	if err != nil {
 		return 0, err
@@ -346,7 +362,7 @@ func (q *Queries) GroundPendingDinner(ctx context.Context, arg GroundPendingDinn
 }
 
 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, grounding_error 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, grounding_revision FROM dinners
 WHERE status = ?
 ORDER BY normalized_name, id
 `
@@ -379,6 +395,7 @@ func (q *Queries) ListDinnersByStatus(ctx context.Context, status string) ([]Din
 			&i.UpdatedAt,
 			&i.RecipeUrl,
 			&i.GroundingError,
+			&i.GroundingRevision,
 		); err != nil {
 			return nil, err
 		}
@@ -394,40 +411,50 @@ 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, grounding_error FROM dinners
-WHERE status <> 'archived'
-ORDER BY id
+SELECT dinners.id, dinners.name, dinners.normalized_name, dinners.status, dinners.origin, dinners.method, dinners.minutes_total, dinners.difficulty, dinners.cuisine, dinners.is_favorite, dinners.recipe_id, dinners.photo_id, dinners.grounding_status, dinners.updated_by, dinners.created_at, dinners.updated_at, dinners.recipe_url, dinners.grounding_error, dinners.grounding_revision, recipes.source_url AS recipe_source_url
+FROM dinners
+LEFT JOIN recipes ON recipes.id = dinners.recipe_id
+WHERE dinners.status <> 'archived'
+ORDER BY dinners.id
 `
 
-// Every dinner a new or renamed dinner must not repeat.
-func (q *Queries) ListUnarchivedDinners(ctx context.Context) ([]Dinner, error) {
+type ListUnarchivedDinnersRow struct {
+	Dinner          Dinner
+	RecipeSourceUrl sql.NullString
+}
+
+// Every dinner a new or renamed dinner must not repeat, with the
+// source_url of the recipe it is grounded in (NULL while it has none).
+func (q *Queries) ListUnarchivedDinners(ctx context.Context) ([]ListUnarchivedDinnersRow, error) {
 	rows, err := q.db.QueryContext(ctx, listUnarchivedDinners)
 	if err != nil {
 		return nil, err
 	}
 	defer rows.Close()
-	var items []Dinner
+	var items []ListUnarchivedDinnersRow
 	for rows.Next() {
-		var i Dinner
+		var i ListUnarchivedDinnersRow
 		if err := rows.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,
+			&i.Dinner.ID,
+			&i.Dinner.Name,
+			&i.Dinner.NormalizedName,
+			&i.Dinner.Status,
+			&i.Dinner.Origin,
+			&i.Dinner.Method,
+			&i.Dinner.MinutesTotal,
+			&i.Dinner.Difficulty,
+			&i.Dinner.Cuisine,
+			&i.Dinner.IsFavorite,
+			&i.Dinner.RecipeID,
+			&i.Dinner.PhotoID,
+			&i.Dinner.GroundingStatus,
+			&i.Dinner.UpdatedBy,
+			&i.Dinner.CreatedAt,
+			&i.Dinner.UpdatedAt,
+			&i.Dinner.RecipeUrl,
+			&i.Dinner.GroundingError,
+			&i.Dinner.GroundingRevision,
+			&i.RecipeSourceUrl,
 		); err != nil {
 			return nil, err
 		}
@@ -448,7 +475,7 @@ 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, grounding_error
+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, grounding_revision
 `
 
 type SetDinnerFavoriteParams struct {
@@ -486,6 +513,7 @@ func (q *Queries) SetDinnerFavorite(ctx context.Context, arg SetDinnerFavoritePa
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }
@@ -496,7 +524,7 @@ 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, grounding_error
+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, grounding_revision
 `
 
 type ToggleDinnerFavoriteParams struct {
@@ -528,6 +556,7 @@ func (q *Queries) ToggleDinnerFavorite(ctx context.Context, arg ToggleDinnerFavo
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }
@@ -546,28 +575,30 @@ SET name = ?,
 	recipe_url = ?,
 	photo_id = ?,
 	grounding_status = ?,
+	grounding_revision = ?,
 	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
+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, grounding_revision
 `
 
 type UpdateDinnerParams struct {
-	Name            string
-	NormalizedName  string
-	Status          string
-	Origin          string
-	Method          sql.NullString
-	MinutesTotal    sql.NullInt64
-	Difficulty      sql.NullString
-	Cuisine         sql.NullString
-	RecipeID        sql.NullString
-	RecipeUrl       sql.NullString
-	PhotoID         sql.NullString
-	GroundingStatus string
-	UpdatedBy       sql.NullString
-	UpdatedAt       string
-	ID              string
+	Name              string
+	NormalizedName    string
+	Status            string
+	Origin            string
+	Method            sql.NullString
+	MinutesTotal      sql.NullInt64
+	Difficulty        sql.NullString
+	Cuisine           sql.NullString
+	RecipeID          sql.NullString
+	RecipeUrl         sql.NullString
+	PhotoID           sql.NullString
+	GroundingStatus   string
+	GroundingRevision int64
+	UpdatedBy         sql.NullString
+	UpdatedAt         string
+	ID                string
 }
 
 // An unknown id returns sql.ErrNoRows.
@@ -585,6 +616,7 @@ func (q *Queries) UpdateDinner(ctx context.Context, arg UpdateDinnerParams) (Din
 		arg.RecipeUrl,
 		arg.PhotoID,
 		arg.GroundingStatus,
+		arg.GroundingRevision,
 		arg.UpdatedBy,
 		arg.UpdatedAt,
 		arg.ID,
@@ -609,6 +641,7 @@ func (q *Queries) UpdateDinner(ctx context.Context, arg UpdateDinnerParams) (Din
 		&i.UpdatedAt,
 		&i.RecipeUrl,
 		&i.GroundingError,
+		&i.GroundingRevision,
 	)
 	return i, err
 }

internal/db/models.go

@@ -51,24 +51,25 @@ type ChatSetting struct {
 }
 
 type Dinner struct {
-	ID              string
-	Name            string
-	NormalizedName  string
-	Status          string
-	Origin          string
-	Method          sql.NullString
-	MinutesTotal    sql.NullInt64
-	Difficulty      sql.NullString
-	Cuisine         sql.NullString
-	IsFavorite      int64
-	RecipeID        sql.NullString
-	PhotoID         sql.NullString
-	GroundingStatus string
-	UpdatedBy       sql.NullString
-	CreatedAt       string
-	UpdatedAt       string
-	RecipeUrl       sql.NullString
-	GroundingError  sql.NullString
+	ID                string
+	Name              string
+	NormalizedName    string
+	Status            string
+	Origin            string
+	Method            sql.NullString
+	MinutesTotal      sql.NullInt64
+	Difficulty        sql.NullString
+	Cuisine           sql.NullString
+	IsFavorite        int64
+	RecipeID          sql.NullString
+	PhotoID           sql.NullString
+	GroundingStatus   string
+	UpdatedBy         sql.NullString
+	CreatedAt         string
+	UpdatedAt         string
+	RecipeUrl         sql.NullString
+	GroundingError    sql.NullString
+	GroundingRevision int64
 }
 
 type HouseholdSetting struct {

internal/db/querier.go

@@ -36,14 +36,15 @@ type Querier interface {
 	DeleteRecipeIngredients(ctx context.Context, recipeID string) error
 	DeleteRecipeSteps(ctx context.Context, recipeID string) error
 	FailJob(ctx context.Context, arg FailJobParams) (int64, error)
-	// Fails every dinner still pending whose grounding job is no longer queued
-	// or running: the process stopped before the job, or before its handler
-	// recorded a result. Run at boot, after the job runner fails the jobs a
-	// previous process left running.
+	// Fails every dinner still pending whose grounding job for its current
+	// grounding_revision is no longer queued or running: the process stopped
+	// before the job, or before its handler recorded a result. Run at boot,
+	// after the job runner fails the jobs a previous process left running.
 	FailOrphanedPendingDinnerGroundings(ctx context.Context, arg FailOrphanedPendingDinnerGroundingsParams) (int64, error)
-	// Records why the background grounding of a dinner still pending under the
-	// normalized name it was grounded for failed; a dinner grounded some other
-	// way or renamed meanwhile is left as it is (0 rows).
+	// Records why the background grounding of an unarchived dinner still
+	// pending at the grounding_revision it was grounded for failed; a dinner
+	// grounded some other way, renamed or archived meanwhile is left as it is
+	// (0 rows).
 	FailPendingDinnerGrounding(ctx context.Context, arg FailPendingDinnerGroundingParams) (int64, error)
 	// Fails every job left running, at boot before any worker starts.
 	FailRunningJobs(ctx context.Context, arg FailRunningJobsParams) (int64, error)
@@ -65,12 +66,15 @@ type Querier interface {
 	GetRecipeBySourceURL(ctx context.Context, sourceUrl string) (Recipe, error)
 	// Returns sql.ErrNoRows until the row exists.
 	GetRecipeSearchSettings(ctx context.Context) (RecipeSearchSetting, error)
-	// Records a dinner's grounding (grounded or manual) and clears any
-	// grounding_error. An unknown id returns sql.ErrNoRows.
+	// Records a dinner's grounding by hand (grounded or manual) and clears any
+	// grounding_error and pasted recipe_url: the recipe chosen replaces the
+	// link. An unknown id returns sql.ErrNoRows.
 	GroundDinner(ctx context.Context, arg GroundDinnerParams) (Dinner, error)
-	// Records the background grounding of a dinner still pending under the
-	// normalized name it was grounded for; a dinner grounded some other way or
-	// renamed meanwhile is left as it is (0 rows).
+	// Records the background grounding of an unarchived dinner still pending at
+	// the grounding_revision it was grounded for; a dinner grounded some other
+	// way, renamed or archived meanwhile is left as it is (0 rows). A method,
+	// minutes_total or difficulty already set is kept: a pending dinner has
+	// them only when a member edited them while it was grounding.
 	GroundPendingDinner(ctx context.Context, arg GroundPendingDinnerParams) (int64, error)
 	ListDinnersByStatus(ctx context.Context, status string) ([]Dinner, error)
 	// The planned dinners dated from from_date up to but not including
@@ -81,8 +85,9 @@ type Querier interface {
 	ListRecentDeclinedNames(ctx context.Context, limit int64) ([]string, error)
 	ListRecipeIngredients(ctx context.Context, recipeID string) ([]RecipeIngredient, error)
 	ListRecipeSteps(ctx context.Context, recipeID string) ([]RecipeStep, error)
-	// Every dinner a new or renamed dinner must not repeat.
-	ListUnarchivedDinners(ctx context.Context) ([]Dinner, error)
+	// Every dinner a new or renamed dinner must not repeat, with the
+	// source_url of the recipe it is grounded in (NULL while it has none).
+	ListUnarchivedDinners(ctx context.Context) ([]ListUnarchivedDinnersRow, error)
 	// Stores a partial result of a running job.
 	PublishJobResult(ctx context.Context, arg PublishJobResultParams) (int64, error)
 	// An unknown id returns sql.ErrNoRows.

internal/dinners/dinners.go

@@ -176,7 +176,7 @@ func (s *Service) CreateRegular(ctx context.Context, r NewRegular, updatedBy str
 	if err != nil {
 		return Created{}, err
 	}
-	jobID, err := s.enqueueGrounding(ctx, d.ID, harness.Normalize(d.Name))
+	jobID, err := s.enqueueGrounding(ctx, d.ID, d.GroundingRevision)
 	if err != nil {
 		return Created{}, err
 	}
@@ -187,60 +187,59 @@ func (s *Service) CreateRegular(ctx context.Context, r NewRegular, updatedBy str
 		}
 		return Created{Dinner: fromRow(row)}, nil
 	}
-	return Created{Dinner: d, GroundingJobID: jobID}, nil
+	return Created{Dinner: fromRow(d), GroundingJobID: jobID}, nil
 }
 
-// enqueueGrounding enqueues the KindGroundDinner job for pending dinner id,
-// whose normalized name is normalizedName, and returns its id. When the job
-// cannot be enqueued, the dinner's grounding is failed with
-// ReasonGroundingError, so it is not left pending with no job, and the id
-// is nil.
-func (s *Service) enqueueGrounding(ctx context.Context, id, normalizedName string) (*string, error) {
-	jobID, err := s.groundJob.Enqueue(ctx, GroundJob{DinnerID: id})
+// enqueueGrounding enqueues the KindGroundDinner job for pending dinner id
+// at grounding_revision revision and returns its id. When the job cannot be
+// enqueued, the dinner's grounding is failed with ReasonGroundingError, so
+// it is not left pending with no job, and the id is nil.
+func (s *Service) enqueueGrounding(ctx context.Context, id string, revision int64) (*string, error) {
+	jobID, err := s.groundJob.Enqueue(ctx, GroundJob{DinnerID: id, Revision: revision})
 	if err == nil {
 		return &jobID, nil
 	}
 	// The error is a database error, never a dependency's text.
 	s.logger.ErrorContext(ctx, "dinner grounding not enqueued", "dinner_id", id, "error", err)
 	if _, err := db.New(s.st.Writer).FailPendingDinnerGrounding(context.WithoutCancel(ctx), db.FailPendingDinnerGroundingParams{
-		GroundingError: sql.NullString{String: ReasonGroundingError, Valid: true},
-		UpdatedAt:      store.Now().String(),
-		ID:             id,
-		NormalizedName: normalizedName,
+		GroundingError:    sql.NullString{String: ReasonGroundingError, Valid: true},
+		UpdatedAt:         store.Now().String(),
+		ID:                id,
+		GroundingRevision: revision,
 	}); err != nil {
 		return nil, fmt.Errorf("dinners: record failed grounding of %s: %w", id, err)
 	}
 	return nil, nil
 }
 
-func (s *Service) createRegular(ctx context.Context, r NewRegular, updatedBy string) (Dinner, error) {
+func (s *Service) createRegular(ctx context.Context, r NewRegular, updatedBy string) (db.Dinner, error) {
 	if updatedBy == "" {
-		return Dinner{}, errors.New("dinners: create: no member to record as updated_by")
+		return db.Dinner{}, errors.New("dinners: create: no member to record as updated_by")
 	}
 	var name string
 	var recipeURL sql.NullString
 	switch {
 	case r.Name != nil && r.RecipeURL != nil:
-		return Dinner{}, invalid("name", "give a name or a recipe_url, not both")
+		return db.Dinner{}, invalid("name", "give a name or a recipe_url, not both")
 	case r.Name != nil:
 		n, err := checkName(*r.Name)
 		if err != nil {
-			return Dinner{}, err
+			return db.Dinner{}, err
 		}
 		name = n
 	case r.RecipeURL != nil:
 		u, err := checkRecipeURL(*r.RecipeURL)
 		if err != nil {
-			return Dinner{}, err
+			return db.Dinner{}, err
 		}
 		n, ok := nameFromURL(u)
 		if !ok {
-			return Dinner{}, invalid("recipe_url", "the link does not name a dinner; add it by name instead")
+			return db.Dinner{}, invalid("recipe_url", "the link does not name a dinner; add it by name instead")
 		}
 		name = n
 		recipeURL = sql.NullString{String: u.String(), Valid: true}
 	default:
-		return Dinner{}, invalid("name", "give a name or a recipe_url")
+		return db.Dinner{}, invalid("name", "give a name or a recipe_url")
 	}
 
 	var row db.Dinner
@@ -269,9 +268,9 @@ func (s *Service) createRegular(ctx context.Context, r NewRegular, updatedBy str
 		return nil
 	})
 	if err != nil {
-		return Dinner{}, err
+		return db.Dinner{}, err
 	}
-	return fromRow(row), nil
+	return row, nil
 }
 
 // List returns the dinners with status, which must be regular or
@@ -294,9 +293,10 @@ func (s *Service) List(ctx context.Context, status string) ([]Dinner, error) {
 // Update applies p to dinner id, recording updatedBy. An invalid patch is a
 // *ValidationError and a new name repeating another unarchived dinner a
 // *DuplicateError; either changes nothing. Renaming a dinner still pending
-// clears its recipe_url and enqueues a fresh KindGroundDinner job that
-// grounds the new name: the job already running was for the old name or
-// link, and its result no longer applies.
+// clears its recipe_url, raises its grounding_revision and enqueues a fresh
+// KindGroundDinner job that grounds the new name: a job queued or running
+// for the old name or link carries the old revision, so it can no longer
+// write the dinner.
 func (s *Service) Update(ctx context.Context, id string, p Patch, updatedBy string) (Dinner, error) {
 	if updatedBy == "" {
 		return Dinner{}, errors.New("dinners: update: no member to record as updated_by")
@@ -318,21 +318,22 @@ func (s *Service) Update(ctx context.Context, id string, p Patch, updatedBy stri
 			return fmt.Errorf("dinners: read %s: %w", id, err)
 		}
 		params := db.UpdateDinnerParams{
-			ID:              cur.ID,
-			Name:            cur.Name,
-			NormalizedName:  cur.NormalizedName,
-			Status:          cur.Status,
-			Origin:          cur.Origin,
-			Method:          cur.Method,
-			MinutesTotal:    cur.MinutesTotal,
-			Difficulty:      cur.Difficulty,
-			Cuisine:         cur.Cuisine,
-			RecipeID:        cur.RecipeID,
-			RecipeUrl:       cur.RecipeUrl,
-			PhotoID:         cur.PhotoID,
-			GroundingStatus: cur.GroundingStatus,
-			UpdatedBy:       sql.NullString{String: updatedBy, Valid: true},
-			UpdatedAt:       store.Now().String(),
+			ID:                cur.ID,
+			Name:              cur.Name,
+			NormalizedName:    cur.NormalizedName,
+			Status:            cur.Status,
+			Origin:            cur.Origin,
+			Method:            cur.Method,
+			MinutesTotal:      cur.MinutesTotal,
+			Difficulty:        cur.Difficulty,
+			Cuisine:           cur.Cuisine,
+			RecipeID:          cur.RecipeID,
+			RecipeUrl:         cur.RecipeUrl,
+			PhotoID:           cur.PhotoID,
+			GroundingStatus:   cur.GroundingStatus,
+			GroundingRevision: cur.GroundingRevision,
+			UpdatedBy:         sql.NullString{String: updatedBy, Valid: true},
+			UpdatedAt:         store.Now().String(),
 		}
 		if p.Name != nil {
 			if err := checkUnique(ctx, q, cur.ID, name, sql.NullString{}); err != nil {
@@ -344,6 +345,7 @@ func (s *Service) Update(ctx context.Context, id string, p Patch, updatedBy stri
 				// The link was the old dinner's recipe; the new name is
 				// grounded by name, and a link can be given by hand.
 				params.RecipeUrl = sql.NullString{}
+				params.GroundingRevision++
 			}
 		}
 		if p.Method != nil {
@@ -359,14 +361,14 @@ func (s *Service) Update(ctx context.Context, id string, p Patch, updatedBy stri
 		if err != nil {
 			return fmt.Errorf("dinners: update %s: %w", id, err)
 		}
-		regrounding = row.GroundingStatus == GroundingPending && row.NormalizedName != cur.NormalizedName
+		regrounding = row.GroundingRevision != cur.GroundingRevision
 		return nil
 	})
 	if err != nil {
 		return Dinner{}, err
 	}
 	if regrounding {
-		jobID, err := s.enqueueGrounding(ctx, row.ID, row.NormalizedName)
+		jobID, err := s.enqueueGrounding(ctx, row.ID, row.GroundingRevision)
 		if err != nil {
 			return Dinner{}, err
 		}
@@ -514,18 +516,24 @@ func nameFromURL(u *url.URL) (name string, ok bool) {
 }
 
 // checkUnique returns a *DuplicateError when name is harness.Similar to an
-// unarchived dinner other than self, or recipeURL is one's recipe link.
+// unarchived dinner other than self, or recipeURL is one's recipe link: the
+// source_url of the recipe it is grounded in, else the recipe_url still
+// awaiting grounding.
 func checkUnique(ctx context.Context, q *db.Queries, self, name string, recipeURL sql.NullString) error {
 	rows, err := q.ListUnarchivedDinners(ctx)
 	if err != nil {
 		return fmt.Errorf("dinners: list for dedupe: %w", err)
 	}
 	for _, row := range rows {
-		if row.ID == self {
+		if row.Dinner.ID == self {
 			continue
 		}
-		if harness.Similar(name, row.Name) || (recipeURL.Valid && row.RecipeUrl == recipeURL) {
-			return &DuplicateError{Existing: fromRow(row)}
+		link := row.Dinner.RecipeUrl
+		if row.RecipeSourceUrl.Valid {
+			link = row.RecipeSourceUrl
+		}
+		if harness.Similar(name, row.Dinner.Name) || (recipeURL.Valid && link == recipeURL) {
+			return &DuplicateError{Existing: fromRow(row.Dinner)}
 		}
 	}
 	return nil

internal/dinners/export_test.go

@@ -1,6 +1,7 @@
 package dinners
 
 import (
+	"context"
 	"testing"
 	"time"
 )
@@ -12,3 +13,11 @@ func SetGroundTimeout(t *testing.T, d time.Duration) {
 	groundTimeout = d
 	t.Cleanup(func() { groundTimeout = old })
 }
+
+// RunGroundJob runs the KindGroundDinner handler for p in the caller's
+// goroutine, as the job runner would, and returns the grounding status it
+// reports.
+func (s *Service) RunGroundJob(ctx context.Context, p GroundJob) (string, error) {
+	r, err := s.runGroundJob(ctx, p, nil)
+	return r.GroundingStatus, err
+}

internal/dinners/grounding.go

@@ -76,14 +76,17 @@ var groundTimeout = GroundTimeout
 // runs past GroundTimeout; the dinner is left as it was.
 var ErrGroundTimeout = errors.New("dinners: grounding the recipe took too long")
 
-// GroundJob is the KindGroundDinner payload.
+// GroundJob is the KindGroundDinner payload: the dinner to ground and its
+// grounding_revision when the job was enqueued.
 type GroundJob struct {
 	DinnerID string `json:"dinner_id"`
+	Revision int64  `json:"revision"`
 }
 
 // groundResult is the KindGroundDinner result: the dinner's grounding
-// status once the job ends. It is not grounded when the dinner was
-// grounded by hand before the job finished.
+// status once the job ends. It is not grounded by this job when the dinner
+// was grounded by hand before the job finished, renamed (a later job
+// grounds it) or archived; the job then reports the status it found.
 type groundResult struct {
 	DinnerID        string `json:"dinner_id"`
 	GroundingStatus string `json:"grounding_status"`
@@ -93,18 +96,21 @@ func (r groundResult) PublicJSON() ([]byte, error) { return json.Marshal(r) }
 
 // runGroundJob grounds a pending dinner as its creation asked: its
 // recipe_url with GroundURL, else its name with Ground. Success records
-// the recipe, photo, method, minutes and difficulty with grounding_status
-// grounded; failure records grounding_status failed with its Reason, which
-// is also the job's failure code. Either is recorded only while the dinner
-// is still pending under the normalized name read here: a dinner grounded
-// by hand meanwhile is left as it is, and one renamed meanwhile is left
-// pending for the job its rename enqueued.
+// the recipe and photo with grounding_status grounded, and the recipe's
+// method, minutes and difficulty where a member has not set them; failure
+// records grounding_status failed with its Reason, which is also the job's
+// failure code. A dinner archived, no longer pending, or at a
+// grounding_revision other than p.Revision is not grounded at all, and
+// either result is recorded only while the dinner is still unarchived,
+// pending and at p.Revision: a dinner grounded by hand meanwhile is left as
+// it is, and one renamed or archived meanwhile is left pending — for the
+// job its rename enqueued, or for none.
 func (s *Service) runGroundJob(ctx context.Context, p GroundJob, _ func(groundResult) error) (groundResult, error) {
 	row, err := db.New(s.st.Reader).GetDinner(ctx, p.DinnerID)
 	if err != nil {
 		return groundResult{}, fmt.Errorf("dinners: ground: read %s: %w", p.DinnerID, err)
 	}
-	if row.GroundingStatus != GroundingPending {
+	if row.Status == StatusArchived || row.GroundingStatus != GroundingPending || row.GroundingRevision != p.Revision {
 		return groundResult{DinnerID: row.ID, GroundingStatus: row.GroundingStatus}, nil
 	}
 
@@ -124,10 +130,10 @@ func (s *Service) runGroundJob(ctx context.Context, p GroundJob, _ func(groundRe
 		s.logger.InfoContext(ctx, "dinner grounding failed", "dinner_id", row.ID, "reason", reason)
 		write := context.WithoutCancel(ctx)
 		if _, failErr := db.New(s.st.Writer).FailPendingDinnerGrounding(write, db.FailPendingDinnerGroundingParams{
-			GroundingError: sql.NullString{String: reason, Valid: true},
-			UpdatedAt:      store.Now().String(),
-			ID:             row.ID,
-			NormalizedName: row.NormalizedName,
+			GroundingError:    sql.NullString{String: reason, Valid: true},
+			UpdatedAt:         store.Now().String(),
+			ID:                row.ID,
+			GroundingRevision: p.Revision,
 		}); failErr != nil {
 			return groundResult{}, fmt.Errorf("dinners: ground: record failure of %s: %w", row.ID, failErr)
 		}
@@ -138,14 +144,14 @@ func (s *Service) runGroundJob(ctx context.Context, p GroundJob, _ func(groundRe
 	}
 
 	n, err := db.New(s.st.Writer).GroundPendingDinner(ctx, db.GroundPendingDinnerParams{
-		RecipeID:       sql.NullString{String: gr.RecipeID, Valid: true},
-		PhotoID:        sql.NullString{String: gr.PhotoID, Valid: true},
-		Method:         sql.NullString{String: gr.Method, Valid: true},
-		MinutesTotal:   nullInt(gr.MinutesTotal),
-		Difficulty:     sql.NullString{String: gr.Difficulty, Valid: true},
-		UpdatedAt:      store.Now().String(),
-		ID:             row.ID,
-		NormalizedName: row.NormalizedName,
+		RecipeID:          sql.NullString{String: gr.RecipeID, Valid: true},
+		PhotoID:           sql.NullString{String: gr.PhotoID, Valid: true},
+		Method:            sql.NullString{String: gr.Method, Valid: true},
+		MinutesTotal:      nullInt(gr.MinutesTotal),
+		Difficulty:        sql.NullString{String: gr.Difficulty, Valid: true},
+		UpdatedAt:         store.Now().String(),
+		ID:                row.ID,
+		GroundingRevision: p.Revision,
 	})
 	if err != nil {
 		return groundResult{}, fmt.Errorf("dinners: ground: record %s: %w", row.ID, err)

internal/dinners/grounding_test.go

@@ -2,6 +2,8 @@ package dinners_test
 
 import (
 	"context"
+	"database/sql"
+	"encoding/json"
 	"errors"
 	"io"
 	"log/slog"
@@ -385,6 +387,168 @@ func TestRenameLinkWhilePendingGroundsNewName(t *testing.T) {
 	if got := e.search.Queries(); !slices.Equal(got, []string{"Beef stew"}) {
 		t.Errorf("searched %q, want only the new name", got)
 	}
+	if row.RecipeUrl.Valid {
+		t.Errorf("recipe_url = %q, want the old link dropped", row.RecipeUrl.String)
+	}
+	if _, err := db.New(e.st.Reader).GetRecipeBySourceURL(t.Context(), curryA); !errors.Is(err, sql.ErrNoRows) {
+		t.Errorf("old link's recipe lookup err = %v, want it never grounded (sql.ErrNoRows)", err)
+	}
+}
+
+// queuedJob reads the payload of queued KindGroundDinner job id.
+func (e *env) queuedJob(t *testing.T, id string) dinners.GroundJob {
+	t.Helper()
+	var payload string
+	if err := e.st.Reader.QueryRowContext(t.Context(), `SELECT payload FROM jobs WHERE id = ?`, id).Scan(&payload); err != nil {
+		t.Fatal(err)
+	}
+	var p dinners.GroundJob
+	if err := json.Unmarshal([]byte(payload), &p); err != nil {
+		t.Fatal(err)
+	}
+	return p
+}
+
+// TestRenameBeforeJobStartsSkipsStaleJob: a Regular renamed before its
+// first job starts is grounded only by the job its rename enqueued. The
+// first job, though it would read the new name, does no work and writes
+// nothing, so its failure cannot leave the dinner "Needs a recipe" while
+// the rename's job finds a recipe.
+func TestRenameBeforeJobStartsSkipsStaleJob(t *testing.T) {
+	t.Parallel()
+	e := newUnstartedEnv(t)
+	e.search.Results["Beef stew"] = []recipes.Candidate{{URL: stew}}
+
+	c, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{Name: ptr("Chicken curry")}, member)
+	if err != nil {
+		t.Fatal(err)
+	}
+	first := e.queuedJob(t, *c.GroundingJobID)
+	if first.DinnerID != c.ID || first.Revision != e.dinner(t, c.ID).GroundingRevision {
+		t.Fatalf("first job = %+v, want dinner %s at its revision", first, c.ID)
+	}
+	if _, err := e.svc.Update(t.Context(), c.ID, dinners.Patch{Name: ptr("Beef stew")}, member); err != nil {
+		t.Fatal(err)
+	}
+	renamed := e.dinner(t, c.ID)
+	if renamed.GroundingRevision != first.Revision+1 {
+		t.Fatalf("revision after rename = %d, want %d", renamed.GroundingRevision, first.Revision+1)
+	}
+
+	// The first job would fail if it searched.
+	e.search.Err = recipes.ErrSearchRateLimited
+	status, err := e.svc.RunGroundJob(t.Context(), first)
+	if err != nil || status != dinners.GroundingPending {
+		t.Fatalf("first job = %q, %v; want pending, no error", status, err)
+	}
+	if q := e.search.Queries(); len(q) != 0 {
+		t.Errorf("first job searched %q, want no work for a stale revision", q)
+	}
+	if row := e.dinner(t, c.ID); row != renamed {
+		t.Fatalf("first job wrote the dinner: %+v, was %+v", row, renamed)
+	}
+
+	e.search.Err = nil
+	e.model.QueueGenerate(recipestest.NormalizedReply("oven", 150))
+	status, err = e.svc.RunGroundJob(t.Context(), dinners.GroundJob{DinnerID: c.ID, Revision: renamed.GroundingRevision})
+	if err != nil || status != dinners.GroundingGrounded {
+		t.Fatalf("rename's job = %q, %v; want grounded", status, err)
+	}
+	row := e.dinner(t, c.ID)
+	rec, err := db.New(e.st.Reader).GetRecipe(t.Context(), row.RecipeID.String)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if row.GroundingStatus != dinners.GroundingGrounded || rec.SourceUrl != stew {
+		t.Errorf("dinner = %+v recipe %s, want grounded in %s", row, rec.SourceUrl, stew)
+	}
+
+	// A stale job finishing last changes nothing either.
+	if status, err := e.svc.RunGroundJob(t.Context(), first); err != nil || status != dinners.GroundingGrounded {
+		t.Errorf("first job run last = %q, %v; want grounded reported, no error", status, err)
+	}
+	if after := e.dinner(t, c.ID); after != row {
+		t.Errorf("stale job changed the grounded dinner: %+v, was %+v", after, row)
+	}
+}
+
+// TestEditWhilePendingIsKept: a method or minutes a member saves while a
+// Regular is grounding is kept when grounding succeeds; what the member
+// did not set comes from the recipe.
+func TestEditWhilePendingIsKept(t *testing.T) {
+	t.Parallel()
+	e := newEnv(t)
+	e.search.Gate = make(chan struct{})
+	e.model.QueueGenerate(recipestest.NormalizedReply("stovetop", 40))
+
+	c, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{Name: ptr("Chicken curry")}, member)
+	if err != nil {
+		t.Fatal(err)
+	}
+	e.waitQuery(t, "Chicken curry")
+	if _, err := e.svc.Update(t.Context(), c.ID, dinners.Patch{Method: ptr("grill"), MinutesTotal: ptr(15)}, member); err != nil {
+		t.Fatal(err)
+	}
+	close(e.search.Gate)
+
+	row := e.waitGrounding(t, c.ID)
+	if row.GroundingStatus != dinners.GroundingGrounded || !row.RecipeID.Valid || !row.PhotoID.Valid {
+		t.Fatalf("dinner = %+v, want grounded", row)
+	}
+	if row.Method.String != "grill" || row.MinutesTotal.Int64 != 15 || row.Difficulty.String != "easy" {
+		t.Errorf("dinner = %s, %d minutes, %s; want the member's grill and 15 minutes, the recipe's easy",
+			row.Method.String, row.MinutesTotal.Int64, row.Difficulty.String)
+	}
+}
+
+// TestArchiveWhilePendingStopsGrounding: a pending Regular archived before
+// its job starts is not searched for, and one archived while its job runs
+// is not written; neither ends up grounded.
+func TestArchiveWhilePendingStopsGrounding(t *testing.T) {
+	t.Parallel()
+	t.Run("before the job starts", func(t *testing.T) {
+		t.Parallel()
+		e := newUnstartedEnv(t)
+		e.model.QueueGenerate(recipestest.NormalizedReply("stovetop", 40))
+		c, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{Name: ptr("Chicken curry")}, member)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if _, err := e.svc.Archive(t.Context(), c.ID, member); err != nil {
+			t.Fatal(err)
+		}
+		e.start(t)
+		if job := e.waitJob(t, *c.GroundingJobID); job.Status != jobs.StatusSucceeded {
+			t.Fatalf("job = %+v, want succeeded with nothing to do", job)
+		}
+		if q := e.search.Queries(); len(q) != 0 {
+			t.Errorf("searched %q for an archived dinner", q)
+		}
+		if row := e.dinner(t, c.ID); row.Status != dinners.StatusArchived || row.GroundingStatus == dinners.GroundingGrounded || row.RecipeID.Valid {
+			t.Errorf("dinner = %+v, want archived and not grounded", row)
+		}
+	})
+	t.Run("while the job runs", func(t *testing.T) {
+		t.Parallel()
+		e := newEnv(t)
+		e.search.Gate = make(chan struct{})
+		e.model.QueueGenerate(recipestest.NormalizedReply("stovetop", 40))
+		c, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{Name: ptr("Chicken curry")}, member)
+		if err != nil {
+			t.Fatal(err)
+		}
+		e.waitQuery(t, "Chicken curry")
+		if _, err := e.svc.Archive(t.Context(), c.ID, member); err != nil {
+			t.Fatal(err)
+		}
+		close(e.search.Gate)
+		if job := e.waitJob(t, *c.GroundingJobID); job.Status != jobs.StatusSucceeded {
+			t.Fatalf("job = %+v", job)
+		}
+		if row := e.dinner(t, c.ID); row.Status != dinners.StatusArchived || row.GroundingStatus == dinners.GroundingGrounded || row.RecipeID.Valid {
+			t.Errorf("dinner = %+v, want archived and not grounded", row)
+		}
+	})
 }
 
 // TestRenameWhilePendingEnqueueFailure: a pending Regular renamed when the
@@ -530,6 +694,59 @@ func TestFixViaCandidate(t *testing.T) {
 	}
 }
 
+// TestFixReplacesPendingLink: fixing a Regular added from a link that held
+// no recipe drops that link, so it no longer blocks adding the link again,
+// while the link of the recipe chosen does.
+func TestFixReplacesPendingLink(t *testing.T) {
+	t.Parallel()
+	const lost = "https://gone.example/recipes/lamb-tagine"
+	tests := []struct {
+		name string
+		fix  dinners.Fix
+		// linkTaken is the recipe link the fixed dinner now has, if any.
+		linkTaken string
+	}{
+		{"candidate", dinners.Fix{CandidateID: ptr(curryB)}, curryB},
+		{"manual", dinners.Fix{Manual: &dinners.ManualRecipe{Ingredients: []string{"1 lamb"}, Minutes: ptr(90), Method: ptr("oven")}}, ""},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			e := newEnv(t)
+			c, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{RecipeURL: ptr(lost)}, member)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if job := e.waitJob(t, *c.GroundingJobID); job.Status != jobs.StatusFailed {
+				t.Fatalf("job = %+v, want failed", job)
+			}
+			// Renamed, so only the link could repeat it.
+			if _, err := e.svc.Update(t.Context(), c.ID, dinners.Patch{Name: ptr("Weeknight dinner")}, member); err != nil {
+				t.Fatal(err)
+			}
+			e.model.QueueGenerate(recipestest.NormalizedReply("stovetop", 25))
+			d, err := e.svc.Ground(t.Context(), c.ID, tt.fix, member)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if d.RecipeURL != nil {
+				t.Errorf("recipe_url = %q after the fix, want the unusable link dropped", *d.RecipeURL)
+			}
+
+			if _, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{RecipeURL: ptr(lost)}, member); err != nil {
+				t.Errorf("adding the dropped link again: %v, want added", err)
+			}
+			if tt.linkTaken != "" {
+				_, err := e.svc.CreateRegular(t.Context(), dinners.NewRegular{RecipeURL: ptr(tt.linkTaken)}, member)
+				var dup *dinners.DuplicateError
+				if !errors.As(err, &dup) || dup.Existing.ID != c.ID {
+					t.Errorf("adding the fixed dinner's recipe link: err = %v, want a duplicate of %s", err, c.ID)
+				}
+			}
+		})
+	}
+}
+
 func TestFixViaRecipeURL(t *testing.T) {
 	t.Parallel()
 	e := newEnv(t)

internal/store/migrate_test.go

@@ -175,8 +175,8 @@ func TestMigrateEmbeddedMigrations(t *testing.T) {
 	if err := Migrate(context.Background(), s.Writer, migrations.FS); err != nil {
 		t.Fatal(err)
 	}
-	if got := versions(migrationRows(t, s)); got != "0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error" {
-		t.Errorf("versions = %q, want 0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error", got)
+	if got := versions(migrationRows(t, s)); got != "0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error,0010_dinner_grounding_revision" {
+		t.Errorf("versions = %q, want 0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error,0010_dinner_grounding_revision", got)
 	}
 }
 
@@ -196,8 +196,8 @@ func TestMigrateBootstrapThenEmbeddedInitApplies(t *testing.T) {
 	if err := Migrate(ctx, s.Writer, migrations.FS); err != nil {
 		t.Fatal(err)
 	}
-	if got := versions(migrationRows(t, s)); got != "0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error" {
-		t.Errorf("versions = %q, want 0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error", got)
+	if got := versions(migrationRows(t, s)); got != "0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error,0010_dinner_grounding_revision" {
+		t.Errorf("versions = %q, want 0000_bootstrap,0001_init,0002_household_settings_updated_by,0003_jobs_status,0004_ai_provider_presets,0005_ai_provider_xai,0006_ai_runs_status,0007_recipe_grounding,0008_dinner_recipe_url,0009_dinner_grounding_error,0010_dinner_grounding_revision", got)
 	}
 	if !tableExists(t, s, "dinners") {
 		t.Error("table from 0001_init was not created")

migrations/0010_dinner_grounding_revision.sql

@@ -0,0 +1,7 @@
+-- 0010_dinner_grounding_revision: each ground_dinner job carries the
+-- dinner's grounding_revision when it was enqueued, and records its result
+-- only while the dinner still has that revision. Renaming a pending dinner
+-- raises the revision before enqueuing the job for the new name, so an
+-- earlier job — queued or running — can no longer write the dinner.
+
+ALTER TABLE dinners ADD COLUMN grounding_revision INTEGER NOT NULL DEFAULT 0;

migrations/queries/dinners.sql

@@ -25,10 +25,13 @@ SELECT COUNT(*) FROM dinners
 WHERE status = 'regular';
 
 -- name: ListUnarchivedDinners :many
--- Every dinner a new or renamed dinner must not repeat.
-SELECT * FROM dinners
-WHERE status <> 'archived'
-ORDER BY id;
+-- Every dinner a new or renamed dinner must not repeat, with the
+-- source_url of the recipe it is grounded in (NULL while it has none).
+SELECT sqlc.embed(dinners), recipes.source_url AS recipe_source_url
+FROM dinners
+LEFT JOIN recipes ON recipes.id = dinners.recipe_id
+WHERE dinners.status <> 'archived'
+ORDER BY dinners.id;
 
 -- name: UpdateDinner :one
 -- An unknown id returns sql.ErrNoRows.
@@ -45,6 +48,7 @@ SET name = ?,
 	recipe_url = ?,
 	photo_id = ?,
 	grounding_status = ?,
+	grounding_revision = ?,
 	updated_by = ?,
 	updated_at = ?
 WHERE id = ?
@@ -78,10 +82,12 @@ WHERE id = ?
 RETURNING *;
 
 -- name: GroundDinner :one
--- Records a dinner's grounding (grounded or manual) and clears any
--- grounding_error. An unknown id returns sql.ErrNoRows.
+-- Records a dinner's grounding by hand (grounded or manual) and clears any
+-- grounding_error and pasted recipe_url: the recipe chosen replaces the
+-- link. An unknown id returns sql.ErrNoRows.
 UPDATE dinners
 SET recipe_id = ?,
+	recipe_url = NULL,
 	photo_id = ?,
 	method = ?,
 	minutes_total = ?,
@@ -94,35 +100,44 @@ WHERE id = ?
 RETURNING *;
 
 -- name: GroundPendingDinner :execrows
--- Records the background grounding of a dinner still pending under the
--- normalized name it was grounded for; a dinner grounded some other way or
--- renamed meanwhile is left as it is (0 rows).
+-- Records the background grounding of an unarchived dinner still pending at
+-- the grounding_revision it was grounded for; a dinner grounded some other
+-- way, renamed or archived meanwhile is left as it is (0 rows). A method,
+-- minutes_total or difficulty already set is kept: a pending dinner has
+-- them only when a member edited them while it was grounding.
 UPDATE dinners
-SET recipe_id = ?,
-	photo_id = ?,
-	method = ?,
-	minutes_total = ?,
-	difficulty = ?,
+SET recipe_id = sqlc.arg(recipe_id),
+	photo_id = sqlc.arg(photo_id),
+	method = COALESCE(method, sqlc.arg(method)),
+	minutes_total = COALESCE(minutes_total, sqlc.arg(minutes_total)),
+	difficulty = COALESCE(difficulty, sqlc.arg(difficulty)),
 	grounding_status = 'grounded',
 	grounding_error = NULL,
-	updated_at = ?
-WHERE id = ? AND grounding_status = 'pending' AND normalized_name = ?;
+	updated_at = sqlc.arg(updated_at)
+WHERE id = sqlc.arg(id)
+	AND status <> 'archived'
+	AND grounding_status = 'pending'
+	AND grounding_revision = sqlc.arg(grounding_revision);
 
 -- name: FailPendingDinnerGrounding :execrows
--- Records why the background grounding of a dinner still pending under the
--- normalized name it was grounded for failed; a dinner grounded some other
--- way or renamed meanwhile is left as it is (0 rows).
+-- Records why the background grounding of an unarchived dinner still
+-- pending at the grounding_revision it was grounded for failed; a dinner
+-- grounded some other way, renamed or archived meanwhile is left as it is
+-- (0 rows).
 UPDATE dinners
 SET grounding_status = 'failed',
 	grounding_error = ?,
 	updated_at = ?
-WHERE id = ? AND grounding_status = 'pending' AND normalized_name = ?;
+WHERE id = ?
+	AND status <> 'archived'
+	AND grounding_status = 'pending'
+	AND grounding_revision = ?;
 
 -- name: FailOrphanedPendingDinnerGroundings :execrows
--- Fails every dinner still pending whose grounding job is no longer queued
--- or running: the process stopped before the job, or before its handler
--- recorded a result. Run at boot, after the job runner fails the jobs a
--- previous process left running.
+-- Fails every dinner still pending whose grounding job for its current
+-- grounding_revision is no longer queued or running: the process stopped
+-- before the job, or before its handler recorded a result. Run at boot,
+-- after the job runner fails the jobs a previous process left running.
 UPDATE dinners
 SET grounding_status = 'failed',
 	grounding_error = sqlc.arg(grounding_error),
@@ -133,4 +148,5 @@ WHERE grounding_status = 'pending'
 		WHERE jobs.kind = sqlc.arg(kind)
 			AND jobs.status IN ('queued', 'running')
 			AND json_extract(jobs.payload, '$.dinner_id') = dinners.id
+			AND json_extract(jobs.payload, '$.revision') = dinners.grounding_revision
 	);

web/src/dinners/names.test.ts

@@ -0,0 +1,20 @@
+import { describe, expect, it } from 'vitest'
+import cases from '../../../internal/ai/harness/testdata/dedupe_cases.json'
+import { normalizeName, similarNames } from './names.ts'
+
+// The cases internal/ai/harness's tests run against Normalize and Similar.
+describe('dinner names, as the server compares them', () => {
+  it('has cases to run', () => {
+    expect(cases.normalize.length).toBeGreaterThan(0)
+    expect(cases.similar.length).toBeGreaterThan(0)
+  })
+
+  it.each(cases.normalize)('normalizes "$name" to "$want"', ({ name, want }) => {
+    expect(normalizeName(name)).toBe(want)
+  })
+
+  it.each(cases.similar)('"$a" and "$b" similar: $want', ({ a, b, want }) => {
+    expect(similarNames(a, b)).toBe(want)
+    expect(similarNames(b, a)).toBe(want)
+  })
+})

web/src/dinners/names.ts

@@ -0,0 +1,74 @@
+// The PWA's copy of the server's dinner-name rules (internal/ai/harness
+// Normalize and Similar), so a screen can tell beforehand that the dinners
+// API would refuse a name as a duplicate. The server still decides.
+// internal/ai/harness/testdata/dedupe_cases.json is run against both.
+
+// SIMILAR_THRESHOLD is harness.SimilarThreshold.
+const SIMILAR_THRESHOLD = 0.85
+
+// fillerWords is harness's fillerWords.
+const fillerWords = new Set(['easy', 'best', 'homemade', 'quick', 'simple', 'the', 'a', 'recipe', 'classic'])
+
+// letterFolds are the letters harness folds that canonical decomposition
+// leaves whole: its ligatures and extra letters, and the common stroked
+// Latin letters. Letters with accents fold by decomposing and dropping the
+// marks, as harness's table does; rarer stroked letters are compared as
+// they are.
+const letterFolds: Record<string, string> = {
+  ß: 'ss',
+  æ: 'ae',
+  œ: 'oe',
+  þ: 'th',
+  ð: 'd',
+  ı: 'i',
+  ʼn: 'n',
+  ij: 'ij',
+  ø: 'o',
+  đ: 'd',
+  ħ: 'h',
+  ŀ: 'l',
+  ł: 'l',
+  ŧ: 't',
+  ƀ: 'b',
+  ƶ: 'z',
+  ǥ: 'g',
+  ɨ: 'i',
+}
+
+const combiningMark = /\p{Mn}/u
+const wordChar = /[\p{L}\p{Nd}]/u
+
+// normalizeName is harness.Normalize: lowercased, accents dropped, letters
+// folded, apostrophes removed, other punctuation turned into spaces and
+// filler words dropped. "Easy Chicken Tikka-Masala!" is
+// "chicken tikka masala".
+export function normalizeName(name: string): string {
+  let out = ''
+  for (const ch of name.toLowerCase().normalize('NFD')) {
+    if (combiningMark.test(ch) || ch === "'" || ch === '’') continue
+    const fold = letterFolds[ch]
+    if (fold !== undefined) out += fold
+    else if (wordChar.test(ch)) out += ch
+    else out += ' '
+  }
+  return out
+    .split(' ')
+    .filter((word) => word !== '' && !fillerWords.has(word))
+    .join(' ')
+}
+
+function words(name: string): Set<string> {
+  const normalized = normalizeName(name)
+  return new Set(normalized === '' ? [] : normalized.split(' '))
+}
+
+// similarNames is harness.Similar: whether a and b name the same dinner, by
+// the share of the words of their normalized forms they have in common.
+export function similarNames(a: string, b: string): boolean {
+  const left = words(a)
+  const right = words(b)
+  if (left.size === 0 || right.size === 0) return false
+  let shared = 0
+  for (const word of left) if (right.has(word)) shared++
+  return shared / (left.size + right.size - shared) >= SIMILAR_THRESHOLD
+}

web/src/onboarding/NotificationsStep.test.tsx

@@ -100,6 +100,7 @@ async function renderStep(enableNotifications?: EnableNotifications) {
               element={<NotificationsStep enableNotifications={enableNotifications} />}
             />
             <Route path="/" element={<h1>Home</h1>} />
+            <Route path="/onboarding/regulars" element={<h1>Regulars step</h1>} />
           </Routes>
         </AuthBootstrap>
       </ApiProviders>
@@ -257,6 +258,41 @@ describe('onboarding step 3', () => {
   })
 })
 
+describe('onboarding step 3 with too few Regulars', () => {
+  it('says why and offers a way back to add Regulars', async () => {
+    const server = await renderStep()
+    fireEvent.click(later())
+    await vi.waitFor(() => expect(server.held).toHaveLength(1))
+    server.held[0]!.answer(
+      jsonResponse(400, {
+        error: {
+          code: 'invalid_settings',
+          message: 'invalid household settings: onboarding_completed: add at least 3 Regulars first (have 2)',
+          retryable: false,
+        },
+      }),
+    )
+
+    expect(await screen.findByRole('alert')).toHaveTextContent(
+      'Could not finish setting up: invalid household settings: onboarding_completed: add at least 3 Regulars first (have 2)',
+    )
+    const addRegulars = screen.getByRole('button', { name: 'Add Regulars' })
+    expectMinHitArea(addRegulars)
+    fireEvent.click(addRegulars)
+    expect(await screen.findByRole('heading', { level: 1, name: 'Regulars step' })).toBeInTheDocument()
+  })
+
+  it('offers no way back for any other refusal', async () => {
+    const server = await renderStep()
+    fireEvent.click(later())
+    await vi.waitFor(() => expect(server.held).toHaveLength(1))
+    server.held[0]!.answer(errorResponse(500, 'internal'))
+
+    expect(await screen.findByRole('alert')).toHaveTextContent('Could not finish setting up: internal message')
+    expect(screen.queryByRole('button', { name: 'Add Regulars' })).not.toBeInTheDocument()
+  })
+})
+
 describe('notificationsUnavailable', () => {
   it('answers "unavailable" without asking for permission', async () => {
     await expect(notificationsUnavailable()).resolves.toBe('unavailable')

web/src/onboarding/NotificationsStep.tsx

@@ -2,7 +2,7 @@ import { useState } from 'react'
 import { CalendarDays, ShoppingBasket, Sparkles, UtensilsCrossed, type LucideIcon } from 'lucide-react'
 import { useNavigate } from 'react-router'
 import { InstallHint } from '../pwa/InstallHint.tsx'
-import { useCompleteOnboarding } from '../settings/api.ts'
+import { needsMoreRegulars, useCompleteOnboarding } from '../settings/api.ts'
 import { Button } from '../ui/Button.tsx'
 import { Icon } from '../ui/Icon.tsx'
 import { OnboardingStep } from './OnboardingStep.tsx'
@@ -50,12 +50,15 @@ export type NotificationsStepProps = {
 
 // NotificationsStep is onboarding step 3: what MealQuest notifies about, the
 // iOS install hint, and finishing onboarding. Either button records that
-// onboarding is finished and goes Home.
+// onboarding is finished and goes Home. When the server refuses because the
+// household has fewer than three Regulars, the reason shows with a way back
+// to step 2 to add them.
 export function NotificationsStep({ enableNotifications = notificationsUnavailable }: NotificationsStepProps) {
   const navigate = useNavigate()
   const complete = useCompleteOnboarding()
   const [enabling, setEnabling] = useState(false)
   const [problem, setProblem] = useState<string | null>(null)
+  const [fewRegulars, setFewRegulars] = useState(false)
   const busy = enabling || complete.isPending
 
   async function finish() {
@@ -63,13 +66,19 @@ export function NotificationsStep({ enableNotifications = notificationsUnavailab
       await complete.mutateAsync()
     } catch (error) {
       setProblem(`Could not finish setting up: ${(error as Error).message}`)
+      setFewRegulars(needsMoreRegulars(error as Error))
       return
     }
     void navigate('/', { replace: true })
   }
 
-  async function turnOn() {
+  function clearProblem() {
     setProblem(null)
+    setFewRegulars(false)
+  }
+
+  async function turnOn() {
+    clearProblem()
     setEnabling(true)
     try {
       await enableNotifications()
@@ -83,7 +92,7 @@ export function NotificationsStep({ enableNotifications = notificationsUnavailab
   }
 
   function later() {
-    setProblem(null)
+    clearProblem()
     void finish()
   }
 
@@ -124,6 +133,11 @@ export function NotificationsStep({ enableNotifications = notificationsUnavailab
           {problem}
         </p>
       )}
+      {fewRegulars && (
+        <Button variant="outline" className={styles.recover} onClick={() => void navigate('/onboarding/regulars')}>
+          Add Regulars
+        </Button>
+      )}
     </OnboardingStep>
   )
 }

web/src/onboarding/Onboarding.module.css

@@ -229,6 +229,11 @@
   color: var(--color-accent-700);
 }
 
+/* Step 3: back to step 2 when the server wants more Regulars. */
+.recover {
+  margin-top: var(--space-3);
+}
+
 .status {
   margin-top: 10px;
 }

web/src/onboarding/OnboardingPage.test.tsx

@@ -146,6 +146,14 @@ describe('onboarding step 2 (mock 1h)', () => {
     expect(declaredStyle(pills[0]!).height).toBe('6px')
   })
 
+  it('does not offer a common pick the server would refuse as a duplicate of a Regular', async () => {
+    await regularsStep([dinnerBody('d1', 'Homemade chili'), dinnerBody('d2', 'Easy Chicken Stir Fry')])
+
+    expect(screen.queryByRole('button', { name: 'Add Chili' })).not.toBeInTheDocument()
+    expect(screen.queryByRole('button', { name: 'Add Chicken stir-fry' })).not.toBeInTheDocument()
+    expect(screen.getByRole('button', { name: 'Add Beef tacos' })).toBeInTheDocument()
+  })
+
   it('sizes the input pill, "+" button, picks and Next as the mock does', async () => {
     await regularsStep()
     expect(hitArea(input()).height).toBe(48)

web/src/onboarding/RegularsStep.tsx

@@ -2,6 +2,7 @@ import { useState, type FormEvent } from 'react'
 import { Plus } from 'lucide-react'
 import { useNavigate } from 'react-router'
 import { useAddRegular, useRegulars, useRemoveRegular, type Regular } from '../dinners/api.ts'
+import { similarNames } from '../dinners/names.ts'
 import { useRefusals } from '../dinners/useRefusals.ts'
 import { Button } from '../ui/Button.tsx'
 import { Chip } from '../ui/Chip.tsx'
@@ -16,7 +17,8 @@ import styles from './Onboarding.module.css'
 // household moves on.
 export const MIN_REGULARS = 3
 
-// commonPicks are offered as one-tap Regulars until the household has them.
+// commonPicks are offered as one-tap Regulars until the household has them,
+// or a Regular the server would count as the same dinner.
 export const commonPicks = [
   'Beef tacos',
   'Spaghetti bolognese',
@@ -28,10 +30,6 @@ export const commonPicks = [
   'Fried rice',
 ]
 
-function sameName(a: string, b: string): boolean {
-  return a.trim().toLowerCase() === b.trim().toLowerCase()
-}
-
 // RegularsStep is onboarding step 2, handoff mock 1h: the household adds
 // the dinners it makes on repeat. Each add and remove shows at once and is
 // undone if the server refuses it.
@@ -43,7 +41,7 @@ export function RegularsStep() {
   const [draft, setDraft] = useState('')
   const { refusals, track } = useRefusals()
   const list = regulars.data ?? []
-  const picks = commonPicks.filter((pick) => !list.some((regular) => sameName(regular.name, pick)))
+  const picks = commonPicks.filter((pick) => !list.some((regular) => similarNames(regular.name, pick)))
   // Next waits for every add to be answered, so a refused add's error shows
   // here and an add the server takes back never counts towards the three.
   const adding = list.some((regular) => regular.pending)

web/src/settings/api.ts

@@ -441,6 +441,18 @@ export function householdSettingsProblems(error: Error): HouseholdSettingsProble
   return problems
 }
 
+// needsMoreRegulars reports whether error is the server refusing to finish
+// onboarding because the household has fewer than three Regulars
+// (internal/household MinRegulars) — the only refusal of
+// {"onboarding_completed": true}.
+export function needsMoreRegulars(error: Error): boolean {
+  return (
+    error instanceof ApiError &&
+    error.code === 'invalid_settings' &&
+    error.message.startsWith(`${invalidHouseholdPrefix}onboarding_completed: `)
+  )
+}
+
 // aiStatus is the AI assistant row's status line: the provider and the
 // model's display name, or that no model is chosen yet (the seed).
 export function aiStatus(settings: Pick<AISettings, 'provider' | 'model'>): string {