fix(armaflex): rename misspelled 'armflex' slug to 'armaflex' everywhere

- Route /armflex -> /armaflex (page file + nav/listing links)
- Image folder public/images/armflex/ -> public/images/armaflex/
- Fix gallery alt-text 'Armflex' -> 'Armaflex'
- Add nginx 301 redirect so old /armflex URL still works (SEO-safe)
- Update engineering log + handoff

Verified: npm run build (44 pages), tsc --noEmit, nginx -t,
live probe /armaflex/ 200, zero stale 'armflex' refs.

docs/HANDOFF.md

@@ -1,6 +1,6 @@
 ---
 title: Deal Plus Tech Engineering Handoff
-updated: 2026-08-30
+updated: 2026-09-08
 ---
 # Engineering Handoff
 
@@ -8,13 +8,14 @@ updated: 2026-08-30
 
 - Repository: `/Users/kunthawat/Gitea/dealplustech-astroreal`
 - Branch: `main`
-- Code commit: `c0d8cacfbeb328424138b26e22cb31e82db453b6` (pushed and verified at `origin/main` before this handoff update)
+- Code commit: `c0d8cacfbeb328424138b26e22cb31e82db453b6` (last pushed to `origin/main` on 2026-08-30); Armaflex rename changes staged and pending this handoff commit
 - HEAD: current branch tip of `main`; verify with `git rev-parse HEAD` after the handoff update
 - Remote target: `origin/main`
-- Working tree: clean after the verified code commit; this handoff metadata update is the only pending change
+- Working tree: Armaflex slug/image rename + nginx 301 staged; handoff/log metadata is the only other pending change
 
 ## Completed
 
+- **Armaflex slug rename** — `armflex` → `armaflex` (route, image folder, nav/listing links, gallery alt-text) + nginx 301 for the old URL
 - CcooL product page: `/ฉนวนหุ้มท่อ-ccool/`
 - CcooL images and pricing PDF added under `public/`
 - Navigation, product listing, breadcrumb, metadata, FAQ, Product JSON-LD, and CTA tracking updated
@@ -25,12 +26,13 @@ updated: 2026-08-30
 
 ## Verification
 
-- `npm run build` → **pass**, 44 pages
-- `npx tsc --noEmit` → **pass**
-- `git diff --cached --check` → **pass**
-- Independent reviewer → **pass**, no security concerns or logic errors
-- Static output → 44 HTML pages, JSON-LD parses, Umami attributes are well-formed, images have `alt`; baseline-only duplicate SVG ID and blank-target links remain
-- Assets → five 1024×768 images; five-page A4 PDF; no PDF JavaScript/encryption
+- `npm run build` → **pass**, 44 pages (Armaflex rename)
+- `npx tsc --noEmit` → **pass** (no errors)
+- `git diff --check` → **pass**
+- `nginx -t` on the edited config → **syntax ok** (301 `armflex → armaflex`)
+- Live static probe on `dist/` → `GET /armaflex/` 200, `GET /images/armaflex/gallery-1.jpg` 200, old `/armflex/` 404 at static layer (nginx 301 intercepts at deploy)
+- Source/output scan → zero `armflex` references remain (all `armaflex`)
+- Independent reviewer (prior CcooL/SEO work) → **pass**, no security concerns or logic errors
 
 ## Known Limitations / Blockers
 
@@ -49,5 +51,6 @@ updated: 2026-08-30
 
 ## Evidence Index
 
+- [[2026-09-08-armaflex-slug-rename]]
 - [[2026-08-30-seo-audit-fixes]]
 - [[../test-evidence/2026-08-30-ccool-seo]]

docs/engineering-log.md

@@ -1,6 +1,6 @@
 ---
 title: Deal Plus Tech Engineering Log
-updated: 2026-08-30
+updated: 2026-09-08
 ---
 # Engineering Log
 
@@ -10,6 +10,7 @@ Latest verified code commit: `c0d8cacfbeb328424138b26e22cb31e82db453b6` pushed t
 
 | Milestone | Status | Last verified | Evidence | Next action |
 |---|---|---|---|---|
+| Armaflex slug rename (armflex → armaflex) | complete | 2026-09-08 | `npm run build` 44 pages, `tsc --noEmit` clean, live probe `/armaflex/` 200, old slug 301 in nginx.conf | Push + EasyPanel rebuild; verify live 301 on production |
 | CcooL product page and navigation | complete | 2026-08-30 | `npm run build` produced 44 static pages, including `/ฉนวนหุ้มท่อ-ccool/` | Confirm production domain before the next deploy/SEO change |
 | SEO trust-layer fixes | complete | 2026-08-30 | robots/sitemap, internal links, metadata, legal-page headings, and claim wording checked in built output | Fix production soft-404 routing at the server layer |
 | Umami event convention | complete | 2026-08-30 | Source/output scan found no malformed `data-umami-event` attributes | Review event reports after real traffic arrives |
@@ -24,6 +25,7 @@ Latest verified code commit: `c0d8cacfbeb328424138b26e22cb31e82db453b6` pushed t
 
 ## Entry Index
 
+- [[2026-09-08-armaflex-slug-rename]] — armflex → armaflex slug/image rename + nginx 301, verification, and push handoff.
 - [[2026-08-30-seo-audit-fixes]] — CcooL page, SEO trust layer, Umami tracking, verification, and push handoff.
 
 ## Plan Synchronization

docs/engineering-log/2026-09-08-armaflex-slug-rename.md

@@ -0,0 +1,46 @@
+---
+title: Armaflex product slug rename (armflex → armaflex)
+status: complete
+verified: 2026-09-08
+---
+# Armaflex Product Slug Rename (armflex → armaflex)
+
+## Plan Status
+
+**complete** — the misspelled `armflex` product slug was renamed to `armaflex` (the correct Armaflex/Armacell brand spelling) across route, image folder, navigation, and alt-text, with an nginx 301 redirect added so the old URL does not break.
+
+**Code commit:** (to be filled after commit) on `main`.
+
+## Changed Scope
+
+- Renamed page `src/pages/armflex.astro` → `src/pages/armaflex.astro` (route `/armflex` → `/armaflex`) via `git mv` (history preserved).
+- Renamed image folder `public/images/armflex/` → `public/images/armaflex/` (all 12 assets) via `git mv`.
+- Updated all route/image references: `src/components/common/Header.astro`, `src/layouts/BaseLayout.astro` (category slug + Armaflex subcategory slug), `src/pages/all-products.astro`, `src/pages/404.astro`, and the page's own image paths.
+- Corrected gallery `alt="Armflex …"` → `alt="Armaflex …"` (5 images) in `src/pages/armaflex.astro`.
+- Added a 301 redirect in `nginx.conf` for the old misspelled paths:
+  - `location = /armflex { return 301 /armaflex; }`
+  - `location = /armflex/ { return 301 /armaflex; }`
+
+## Verification Evidence
+
+- `npm run build` — **pass**, 44 static pages; `dist/armaflex/index.html` generated (70.8 KB); `dist/armflex/index.html` gone; `dist/images/armaflex/` populated; `dist/images/armflex/` gone.
+- `npx tsc --noEmit` — **pass** (no errors).
+- `git diff --check` — **pass**.
+- Source scan — `grep -rn 'armflex' src | grep -v armaflex` returns nothing (clean); all 5 nav/listing links now point to `/armaflex`.
+- Built output scan — no stale `/armflex` hrefs or `images/armflex/` paths; gallery alt-text reads "Armaflex ภาพที่ 1–5"; H1 reads "Armaflex Class 1 ชนิดม้วน".
+- Live static probe (`python3 -m http.server` on `dist/`): `GET /armaflex/` → 200, `GET /images/armaflex/gallery-1.jpg` → 200, old `GET /armflex/` → 404 at the static layer (the nginx 301 intercepts it at deploy time).
+- `nginx -t` on the edited config (wrapped in the required `events{}`/`http{}` blocks) — **syntax is ok / test is successful**.
+
+## Tooling Limitations
+
+- `npm test` unavailable (no `test` script in `package.json`).
+- The nginx 301 was validated for syntax locally and by logic; it is served by EasyPanel's nginx container at deploy time, so the live `armflex → armaflex` redirect was not exercised against the production endpoint in this session.
+
+## Risks and Remaining Work
+
+1. After deploy, confirm the production `armflex` → `armaflex` 301 actually fires (EasyPanel must rebuild with the new `nginx.conf`).
+2. Confirm the real production domain before any domain-dependent SEO action (existing known limitation, unchanged).
+
+## Exact Next Action
+
+Commit this change on `main`, then push and rebuild via EasyPanel; verify the `/armflex` → `/armaflex` 301 and the `/armaflex` page on the production domain.