Fix duplicate 'now' declaration in served.html so dashboard buttons work

[skyelaird]

Summary

The user reported the dashboard "not responsive" — the Refresh and Settings buttons did nothing — and shared a browser console with three errors:

Uncaught SyntaxError: Identifier 'now' has already been declared    (index):1672
Uncaught ReferenceError: triggerRefresh is not defined              (index):693:76
Uncaught ReferenceError: showSettings is not defined                (index):698:194

All three are caused by a single bug. Inside initializeDashboard() in served.html, const now = new Date() was declared on line 1658 and then re-declared on line 1672 in the same block scope. The same pattern repeated inside the function's setInterval callback. The resulting SyntaxError aborts parsing of the entire <script> block, so the top-level triggerRefresh (defined at line 2864) and showSettings (line 3447) never become callable, and the inline onclick handlers on lines 693 and 698 fail with ReferenceError.

This is the same bug that was fixed in src/dvoacap/dashboard/dashboard.html in commit f1c1faf (PR #134), but the captured served.html snapshot at the repo root never received the fix. This PR mirrors that fix — renaming the duplicate locals to currentHourInt and tickHour — so served.html matches dashboard.html byte-for-byte.

Test plan

• diff src/dvoacap/dashboard/dashboard.html served.html is empty
• Extracted inline JS from served.html parses with node --check (previously failed at line 1672)
• triggerRefresh and showSettings are top-level function declarations, so they reach window once the script parses
• Load the dashboard in a browser and confirm the Refresh / Settings buttons fire (also: if your installed package predates f1c1faf, run pip install -e ".[dashboard]" --force-reinstall and hard-refresh)

https://claude.ai/code/session_01BLfWHK9hf8k4aBBaQjfQa8

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