Investigation complete. Found the tag implementation details:

**Key Finding**: The `post_meta` component in `/workspaces/firehose/blogex/lib/blogex/components.ex` (lines 83-85) renders tags as plain text without links, while there's already a working `tag_list` component (lines 93-115) that properly creates links with the pattern `href={"#{@base_path}/tag/#{tag}"}`.

**Route structure**: `/tag/:tag` in `/workspaces/firehose/blogex/lib/blogex/router.ex` (line 62) handles tag filtering via `blog.posts_by_tag(tag)`.

**Tests exist**: `/workspaces/firehose/app/test/firehose_web/controllers/blog_test.exs` (lines 35-42, 117-122) verify tag page functionality.