Refactor Post Module: Separate Public Display and Management

[armanist]

Description:
Currently, PostController handles both public post display (listing, single post) and authenticated post management (my posts, create, amend, delete). This mixes responsibilities and can be cleaner.

Proposed Refactor:

1. Controllers:

• PostController → handles public-facing post display only:

  • posts() – paginated list of posts
  • post() – single post view

• PostManagementController → handles authenticated management only:

  • myPosts()
  • createFrom(), create()
  • amendForm(), amend()
  • delete(), deleteImage()

2. Service:

Keep a single PostService class to handle all post operations, both read and write.
Methods can stay logically grouped as read vs write internally.

3. Routes:

Public routes remain in PostController.
Authenticated routes are moved to PostManagementController with proper middlewares (Editor, Owner).