ci/wiki: check that (local) links are well formed (#1282)

* add check-links step, fix some links

* don't depend on build right now

* fix fragment

* reintroduce dependency for build

* don't only check links on push to main

* maybe this is a more sensible dependency tree for this stuff

* change commented suggestions, try v2.0.2 for action

* describe why we're on v2.0.2

* revert to %E2%80%90 (works with lychee anyway)

4 files changed, 17 insertions, 5 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a61e2e2e..bdf78d78 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -228,9 +228,21 @@ jobs:
       - run: nix flake check
         continue-on-error: true
 
+  check-links:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          show-progress: false
+      - uses: lycheeverse/lychee-action@v2.0.2 # later versions break fragment checks. don't bump until this is fixed: https://github.com/lycheeverse/lychee/issues/1574
+        with:
+          args: --offline --include-fragments 'wiki/*.md'
+
   publish-wiki:
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-    needs: build
+    needs:
+      - build
+      - check-links
     permissions:
       contents: write
     runs-on: ubuntu-24.04
diff --git a/wiki/Application-Issues.md b/wiki/Application-Issues.md
index 5aba0b15..b5a18e8a 100644
--- a/wiki/Application-Issues.md
+++ b/wiki/Application-Issues.md
@@ -9,7 +9,7 @@ Apparently, VSCode currently unconditionally queries the X server for a keymap.
 > [!NOTE]
 > Both of these issues seem to be fixed in the nightly build of WezTerm.
 
-There's [a bug](https://github.com/wez/wezterm/issues/4708) in WezTerm that it waits for a zero-sized Wayland configure event, so its window never shows up in niri. To work around it, put this window rule in the niri config (included in the default config):
+There's [a bug](https://github.com/wezterm/wezterm/issues/4708) in WezTerm that it waits for a zero-sized Wayland configure event, so its window never shows up in niri. To work around it, put this window rule in the niri config (included in the default config):
 
 ```kdl
 window-rule {
@@ -20,7 +20,7 @@ window-rule {
 
 This empty default column width lets WezTerm pick its own initial width which makes it show up properly.
 
-There's [another bug](https://github.com/wez/wezterm/issues/6472) in WezTerm that causes it to choose a wrong size when it's in a tiled state, and prevent resizing it.
+There's [another bug](https://github.com/wezterm/wezterm/issues/6472) in WezTerm that causes it to choose a wrong size when it's in a tiled state, and prevent resizing it.
 Niri puts windows in the tiled state with [`prefer-no-csd`](./Configuration:-Miscellaneous.md#prefer-no-csd).
 So if you hit this problem, comment out `prefer-no-csd` in the niri config and restart WezTerm.
 
diff --git a/wiki/Configuration:-Key-Bindings.md b/wiki/Configuration:-Key-Bindings.md
index 513f3581..11df52a2 100644
--- a/wiki/Configuration:-Key-Bindings.md
+++ b/wiki/Configuration:-Key-Bindings.md
@@ -313,7 +313,7 @@ Actions for taking screenshots.
 - `screenshot`: opens the built-in interactive screenshot UI.
 - `screenshot-screen`, `screenshow-window`: takes a screenshot of the focused screen or window respectively.
 
-The screenshot is both stored to the clipboard and saved to disk, according to the [`screenshot-path` option](./Configuration:-Miscellaneous#screenshot-path).
+The screenshot is both stored to the clipboard and saved to disk, according to the [`screenshot-path` option](./Configuration:-Miscellaneous.md#screenshot-path).
 
 <sup>Since: 25.02</sup> You can disable saving to disk for a specific bind with the `write-to-disk=false` property:
 
diff --git a/wiki/Configuration:-Window-Rules.md b/wiki/Configuration:-Window-Rules.md
index e07753fa..6505cb0e 100644
--- a/wiki/Configuration:-Window-Rules.md
+++ b/wiki/Configuration:-Window-Rules.md
@@ -657,7 +657,7 @@ window-rule {
 
 Set a scroll factor for all scroll events sent to a window.
 
-This will be multiplied with the scroll factor set for your input device in the [input section](/wiki/Configuration:-Input.md#pointing-devices).
+This will be multiplied with the scroll factor set for your input device in the [input section](./Configuration:-Input.md#pointing-devices).
 
 ```kdl
 // Make scrolling in Firefox a bit slower.