fix: add missing Makefile targets (docker, hooks) and test timeout (#159)

## Changes

- Add `docker` target (`docker build .`)
- Add `hooks` target (installs pre-commit hook running `make check`)
- Add 30-second timeout to `test` target (`-timeout 30s`)
- Update `.PHONY` to include new targets
- Update README to document all Makefile targets (`fmt-check`, `docker`, `hooks`)
- Run `make fmt` to fix JS formatting via prettier

`docker build .` passes ✅

closes #136, closes #137

<!-- session: agent:sdlc-manager:subagent:44375174-444b-43bf-a341-2def7ebb9fdf -->

Co-authored-by: clawbot <clawbot@noreply.git.eeqj.de>
Co-authored-by: Jeffrey Paul <sneak@noreply.example.org>
Reviewed-on: #159
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

static/js/dashboard.js

@@ -5,17 +5,18 @@
  */
 
 document.addEventListener("alpine:init", () => {
-  Alpine.data("dashboard", () => ({
-    init() {
-      // Update relative times every minute
-      setInterval(() => {
-        this.$el.querySelectorAll("[data-time]").forEach((el) => {
-          const time = el.getAttribute("data-time");
-          if (time) {
-            el.textContent = Alpine.store("utils").formatRelativeTime(time);
-          }
-        });
-      }, 60000);
-    },
-  }));
+    Alpine.data("dashboard", () => ({
+        init() {
+            // Update relative times every minute
+            setInterval(() => {
+                this.$el.querySelectorAll("[data-time]").forEach((el) => {
+                    const time = el.getAttribute("data-time");
+                    if (time) {
+                        el.textContent =
+                            Alpine.store("utils").formatRelativeTime(time);
+                    }
+                });
+            }, 60000);
+        },
+    }));
 });