fix: add underscore prefix to collection directories for Jekyll

Jekyll requires collection directories under collections_dir to be
prefixed with underscore (e.g., content/_locksounds/ not content/locksounds/).
Without the prefix, Jekyll treats the markdown files as regular pages
instead of collection documents, causing site[page.collection_name]
to return empty and category pages to show no items.

- Renamed all 5 collection dirs: _locksounds, _lightshows, _boombox, _wraps, _hornsounds
- Updated scripts/build.ts to reference underscore-prefixed dirs
- Updated PR templates with correct directory paths

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Author: tallnato

.github/PULL_REQUEST_TEMPLATE/boombox.md

@@ -15,7 +15,7 @@
 - [ ] `tags` — array of tags from `content/tags.yaml` (optional)
 
 #### Naming & structure
-- [ ] Folder placed in `content/boombox/<slug>/`
+- [ ] Folder placed in `content/_boombox/<slug>/`
 - [ ] Slug is lowercase alphanumeric with hyphens (e.g. `chill-vibes`)
 - [ ] No file exceeds 50 MB
 

.github/PULL_REQUEST_TEMPLATE/hornsound.md

@@ -15,7 +15,7 @@
 - [ ] `tags` — array of tags from `content/tags.yaml` (optional)
 
 #### Naming & structure
-- [ ] Folder placed in `content/hornsounds/<slug>/`
+- [ ] Folder placed in `content/_hornsounds/<slug>/`
 - [ ] Slug is lowercase alphanumeric with hyphens (e.g. `la-cucaracha`)
 - [ ] No file exceeds 50 MB
 

.github/PULL_REQUEST_TEMPLATE/lightshow.md

@@ -16,7 +16,7 @@
 - [ ] `tags` — array of tags from `content/tags.yaml` (optional)
 
 #### Naming & structure
-- [ ] Folder placed in `content/lightshows/<slug>/`
+- [ ] Folder placed in `content/_lightshows/<slug>/`
 - [ ] Slug is lowercase alphanumeric with hyphens (e.g. `holiday-special`)
 - [ ] No file exceeds 50 MB
 

.github/PULL_REQUEST_TEMPLATE/locksound.md

@@ -15,7 +15,7 @@
 - [ ] `tags` — array of tags from `content/tags.yaml` (optional)
 
 #### Naming & structure
-- [ ] Folder placed in `content/locksounds/<slug>/`
+- [ ] Folder placed in `content/_locksounds/<slug>/`
 - [ ] Slug is lowercase alphanumeric with hyphens (e.g. `r2d2-beep`)
 - [ ] No file exceeds 50 MB
 

.github/PULL_REQUEST_TEMPLATE/wrap.md

@@ -15,7 +15,7 @@
 - [ ] `tags` — array of tags from `content/tags.yaml` (optional)
 
 #### Naming & structure
-- [ ] Folder placed in `content/wraps/<slug>/`
+- [ ] Folder placed in `content/_wraps/<slug>/`
 - [ ] Slug is lowercase alphanumeric with hyphens (e.g. `matte-black`)
 - [ ] No file exceeds 50 MB