fix(stats): unambiguous chart x-labels + unit-carrying tooltips

The daily charts' x-axis labels were bare MM-DD ('10-15', '10-16') — on
the Listening per Day chart (y in hours) those read as hour values, which
is exactly the '10-16 hours a day' misread that prompted this. Labels now
spell the month ('Oct 15') and every chart's tooltip carries its unit
(min / pages / hrs). main.js?v=5

templates/header.templ

@@ -213,7 +213,7 @@ templ Header(user User, currentPath string) {
 		</header>
 		<!-- module bundle; ?v=<commit-ish stamp> busts stale intermediate
 		     builds across app restarts (browser caches are keyed by URL) -->
-		<script type="module" src="/static/main.js?v=4"></script>
+		<script type="module" src="/static/main.js?v=5"></script>
 	</div>
 }
 

templates/header_templ.go

@@ -631,7 +631,7 @@ func Header(user User, currentPath string) templ.Component {
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 64, "</span> <input type=\"text\" id=\"header-search\" placeholder=\"Search your library…\" class=\"input pl-10\" autocomplete=\"off\"></div></div></header><!-- module bundle; ?v=<commit-ish stamp> busts stale intermediate\n\t\t     builds across app restarts (browser caches are keyed by URL) --><script type=\"module\" src=\"/static/main.js?v=4\"></script></div>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 64, "</span> <input type=\"text\" id=\"header-search\" placeholder=\"Search your library…\" class=\"input pl-10\" autocomplete=\"off\"></div></div></header><!-- module bundle; ?v=<commit-ish stamp> busts stale intermediate\n\t\t     builds across app restarts (browser caches are keyed by URL) --><script type=\"module\" src=\"/static/main.js?v=5\"></script></div>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}