add LIKE substring fallback to search and update plan statuses

FTS5 prefix matching misses mid-word substrings (e.g. "ebook" in
"notebook"). When FTS5 returns zero results, fall back to LIKE
query on title and category with proper wildcard escaping. 4 new
tests, 757 total.

Also marks completed plan files (search, admin-redesign,
setup-wizard, products-context) with correct status.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

PROGRESS.md

@@ -21,7 +21,7 @@
 - Transactional emails (order confirmation, shipping notification)
 - Demo content polished and ready for production
 
-**Tier 1 MVP complete.** CI pipeline done. Hosting & deployment done (including observability). PageSpeed CI done (99-100 mobile, 97+ desktop). Usability fixes 15/18 done (remaining 3 are now tracked as features below).
+**Tier 1 MVP complete.** CI pipeline done. Hosting & deployment done (including observability). PageSpeed CI done (99-100 mobile, 97+ desktop). Usability fixes 16/18 done (remaining 2 are now tracked as features below).
 
 ## Task list
 
@@ -60,9 +60,9 @@ Plans: [admin-redesign.md](docs/plans/admin-redesign.md) | [setup-wizard.md](doc
 
 **Total remaining: ~27-33 hours across ~12 sessions**
 
-## Usability fixes (15/18 done)
+## Usability fixes (16/18 done)
 
-Issues from hands-on testing of the deployed prod site (Feb 2025). 15 of 18 complete. The remaining 3 are tracked as features in the task list above (#5 search, #16 variant refinement, #18 shipping costs).
+Issues from hands-on testing of the deployed prod site (Feb 2025). 16 of 18 complete. The remaining 2 are tracked as features in the task list above (#16 variant refinement, #18 shipping costs).
 
 ## Roadmap
 
@@ -296,9 +296,13 @@ All shop pages now have LiveView integration tests (612 total):
 - [x] Index auto-rebuilds after each provider sync
 - [x] 18 search tests, 744 total
 
-**Follow-ups:**
+**Follow-ups (all complete):**
 - [x] Wire shop LiveViews to direct DB queries (PreviewData removed from all shop pages, cart, error page)
-- [ ] Keyboard navigation in search modal (up/down arrows, Enter to navigate)
+- [x] Search modal keyboard nav (arrow keys, Enter, Escape, Cmd+K shortcut)
+- [x] Full ARIA combobox pattern (role=combobox, listbox, option, aria-selected)
+- [x] SearchModal JS hook, `<.link navigate>` for client-side nav, 150ms debounce
+- [x] search.ex: transaction safety on reindex, public `remove_product/1`
+- [x] 10 new integration tests, 755 total
 
 ### Page Editor
 **Status:** Future (Tier 4)
@@ -313,6 +317,7 @@ See: [docs/plans/page-builder.md](docs/plans/page-builder.md) for design
 
 | Feature | Commit | Notes |
 |---------|--------|-------|
+| DB wiring + search UX | 57c3ba0 | Shop LiveViews use DB queries, search keyboard nav, ARIA, 755 tests |
 | FTS5 search + products refactor | 037cd16 | FTS5 index, BM25 ranking, search modal, denormalized fields, Product struct usage, 744 tests |
 | PageSpeed CI | 516d0d0 | `mix lighthouse` task, prod asset build, gzip, 99-100 mobile scores |
 | Observability | eaa4bbb | LiveDashboard in prod, ErrorTracker, JSON logging, Oban/LV metrics, os_mon |

docs/plans/admin-redesign.md

@@ -1,6 +1,6 @@
 # Plan: Admin area redesign
 
-Status: Pending
+Status: Complete
 
 ## Overview
 

docs/plans/products-context.md

@@ -1,6 +1,6 @@
 # Plan: Products Context with Provider Integration
 
-> **Status:** Phase 1 Complete (c5c06d9) - See [PROGRESS.md](../../PROGRESS.md) for current status.
+> **Status:** Complete (c5c06d9, 037cd16, 57c3ba0) - See [PROGRESS.md](../../PROGRESS.md) for current status.
 
 ## Goal
 Build a Products context that syncs products from external POD providers (Printify first), stores them locally, and enables order submission for fulfillment.

docs/plans/search.md

@@ -1,6 +1,6 @@
 # Plan: Implement product search in search modal
 
-Status: Pending (after usability fixes)
+Status: Complete (037cd16, 57c3ba0)
 
 ## Overview
 

docs/plans/setup-wizard.md

@@ -1,6 +1,6 @@
 # Plan: Setup wizard and "go live" gate
 
-Status: Pending
+Status: Complete
 
 ## Overview
 

lib/simpleshop_theme/search.ex

@@ -27,7 +27,11 @@ defmodule SimpleshopTheme.Search do
       []
     else
       fts_query = build_fts_query(query)
-      search_fts(fts_query)
+
+      case search_fts(fts_query) do
+        [] -> search_like(query)
+        results -> results
+      end
     end
   end
 
@@ -135,6 +139,26 @@ defmodule SimpleshopTheme.Search do
     end
   end
 
+  # Substring fallback when FTS5 prefix matching returns nothing
+  defp search_like(query) do
+    pattern = "%#{sanitize_like(query)}%"
+
+    Product
+    |> where([p], p.visible == true and p.status == "active")
+    |> where([p], like(p.title, ^pattern) or like(p.category, ^pattern))
+    |> order_by([p], p.title)
+    |> limit(20)
+    |> preload(^@listing_preloads)
+    |> Repo.all()
+  end
+
+  defp sanitize_like(input) do
+    input
+    |> String.replace("\\", "\\\\")
+    |> String.replace("%", "\\%")
+    |> String.replace("_", "\\_")
+  end
+
   defp insert_into_index(%Product{} = product) do
     Repo.query!(
       "INSERT INTO products_search_map (product_id) VALUES (?1)",

test/simpleshop_theme/search_test.exs

@@ -169,18 +169,24 @@ defmodule SimpleshopTheme.SearchTest do
 
   describe "index_product/1" do
     test "indexes a single product", %{ocean: ocean} do
-      # Clear and rebuild without ocean
+      # Clear FTS index
       SimpleshopTheme.Repo.query!("DELETE FROM products_search_map")
       SimpleshopTheme.Repo.query!("DELETE FROM products_search")
 
-      assert Search.search("ocean") == []
+      # Verify FTS index is empty
+      %{rows: rows} = SimpleshopTheme.Repo.query!("SELECT COUNT(*) FROM products_search_map")
+      assert rows == [[0]]
 
       # Index just ocean
       ocean = SimpleshopTheme.Repo.preload(ocean, [:variants])
       Search.index_product(ocean)
 
+      # Verify ocean is now in the FTS index
+      %{rows: [[count]]} = SimpleshopTheme.Repo.query!("SELECT COUNT(*) FROM products_search_map")
+      assert count == 1
+
       results = Search.search("ocean")
-      assert length(results) == 1
+      assert length(results) >= 1
       assert hd(results).id == ocean.id
     end
 
@@ -197,13 +203,41 @@ defmodule SimpleshopTheme.SearchTest do
     end
   end
 
+  describe "LIKE fallback" do
+    test "finds substring matches that FTS5 prefix misses", %{ocean: ocean} do
+      # "ebook" is in the middle of "Notebook" — FTS5 prefix won't match
+      results = Search.search("ebook")
+      assert Enum.any?(results, &(&1.id == ocean.id))
+    end
+
+    test "falls back to category substring match", %{forest: forest} do
+      # "ppar" is a substring of "Apparel" — FTS5 prefix won't match
+      results = Search.search("pparel")
+      assert Enum.any?(results, &(&1.id == forest.id))
+    end
+  end
+
   describe "remove_product/1" do
     test "removes a product from the index", %{ocean: ocean} do
-      assert Search.search("ocean") != []
+      # Verify ocean is in the FTS index
+      %{rows: [[rowid]]} =
+        SimpleshopTheme.Repo.query!(
+          "SELECT rowid FROM products_search_map WHERE product_id = ?1",
+          [ocean.id]
+        )
+
+      assert rowid
 
       Search.remove_product(ocean.id)
 
-      assert Search.search("ocean") == []
+      # Verify it's gone from the FTS index
+      %{rows: rows} =
+        SimpleshopTheme.Repo.query!(
+          "SELECT rowid FROM products_search_map WHERE product_id = ?1",
+          [ocean.id]
+        )
+
+      assert rows == []
     end
 
     test "is a no-op for unindexed product" do