Add back/forward pagination buttons on homepage, fix button spacing

GIT_GUIDE.md

@@ -0,0 +1,134 @@
+# Git Command Reference
+
+A scenario-based cheat sheet for this repo. Find your situation below and copy the commands.
+
+## Check where you stand
+
+**"What's changed / what am I on?"**
+```bash
+git status              # what's modified, staged, untracked, current branch
+git branch --show-current
+git log --oneline -10   # recent commit history
+git diff                # unstaged changes, file by file
+git diff --stat         # just a summary of which files changed
+```
+
+## Starting new work
+
+**"I want to start a new feature/fix, based on the latest main"**
+```bash
+git checkout main
+git pull origin main          # make sure local main matches GitHub
+git checkout -b fix/my-change # branch off it
+```
+
+**"I'm not sure if my local main is behind GitHub"**
+```bash
+git fetch origin
+git status    # will say "behind 'origin/main' by N commits" if so
+```
+
+## Saving work
+
+**"I've edited files and want to commit them"**
+```bash
+git add path/to/file.md     # stage specific file(s) — safer than `git add .`
+git status                  # double-check what's staged before committing
+git commit -m "Short description of the change"
+```
+
+**"I staged the wrong file"**
+```bash
+git restore --staged path/to/file.md   # unstages it, keeps your edits
+```
+
+**"I want to discard an edit entirely (not commit it)"**
+```bash
+git restore path/to/file.md   # reverts the file to its last committed state — DESTRUCTIVE, edit is gone
+```
+
+## Publishing work
+
+**"I want to push a new branch for the first time"**
+```bash
+git push -u origin branch-name   # -u links local branch to the remote one
+```
+
+**"I've already pushed this branch before, just pushing new commits"**
+```bash
+git push
+```
+
+**"I want to open a PR after pushing"**
+```bash
+gh pr create --fill    # uses your last commit message as the PR title/body
+# or just open the compare link GitHub prints after `git push`
+```
+
+## Switching branches mid-work
+
+**"I have uncommitted changes but need to switch branches"**
+
+Git will refuse if the switch would overwrite those changes. Two options:
+
+```bash
+# Option A: you're not ready to commit yet
+git stash                # shelves the changes, working directory goes clean
+git checkout other-branch
+git stash pop             # brings the shelved changes back, on the new branch
+
+# Option B: you're ready to commit
+git add path/to/file.md
+git commit -m "message"
+git checkout other-branch  # now works cleanly, the commit stays on the original branch
+```
+
+**"I have several things stashed and lost track"**
+```bash
+git stash list             # see everything you've stashed
+git stash pop               # applies + removes the most recent one
+git stash apply stash@{1}    # applies a specific one without removing it from the list
+```
+
+## Cleaning up a branch after it's merged
+
+**"My PR got merged on GitHub, now what locally?"**
+```bash
+git checkout main
+git pull origin main         # brings the merged commit(s) into local main
+git branch -d fix/my-change   # deletes the now-merged local branch (safe: only deletes if fully merged)
+```
+
+**"I want to delete the remote branch too"**
+```bash
+git push origin --delete fix/my-change
+```
+(GitHub often does this automatically after a PR merge if "Automatically delete head branches" is enabled in repo Settings → General.)
+
+## Undoing things
+
+**"I committed but haven't pushed yet, want to undo the commit but keep the edits"**
+```bash
+git reset --soft HEAD~1   # uncommits, keeps changes staged
+```
+
+**"I want to see what a specific commit changed"**
+```bash
+git show <commit-hash>
+```
+
+**"I pushed something wrong and need to revert it"**
+```bash
+git revert <commit-hash>   # creates a NEW commit that undoes the old one — safe for shared branches
+```
+Avoid `git reset --hard` + force-push on any branch others might have pulled — it rewrites history.
+
+## Quick glossary
+
+| Term | Meaning |
+|---|---|
+| **staged** | Marked to be included in the next commit (`git add` does this) |
+| **committed** | Permanently recorded in this branch's local history |
+| **pushed** | Uploaded to GitHub (`origin`) — visible to others |
+| **stash** | A temporary shelf for uncommitted changes, separate from any branch |
+| **origin** | The default name for this repo's GitHub remote |

_layouts/home.html

@@ -135,10 +135,18 @@ <h1 class="card-title my-2 mt-md-0">{{ post.title }}</h1>
 </div>
 <!-- #post-list -->
 
-{% if paginator.next_page %}
-  <div class="d-flex justify-content-center my-4">
-    <a href="{{ paginator.next_page_path | relative_url }}" class="btn btn-outline-primary px-4 py-2">
-      See more posts <i class="fas fa-arrow-right ms-1"></i>
-    </a>
+{% if paginator.previous_page or paginator.next_page %}
+  <div class="d-flex justify-content-center align-items-center gap-3 mt-5 mb-4">
+    {% if paginator.previous_page %}
+      <a href="{{ paginator.previous_page_path | relative_url }}" class="btn btn-outline-primary px-4 py-2">
+        <i class="fas fa-arrow-left me-1"></i> Newer posts
+      </a>
+    {% endif %}
+
+    {% if paginator.next_page %}
+      <a href="{{ paginator.next_page_path | relative_url }}" class="btn btn-outline-primary px-4 py-2">
+        See more posts <i class="fas fa-arrow-right ms-1"></i>
+      </a>
+    {% endif %}
   </div>
 {% endif %}