fix(webui): match the AMP alert to the plugin's get_alert - #3696

plugin-amps.vue computes its own decoration instead of reading the server's. It disagrees with AmpsPlugin.get_alert(), which is the authority — the TUI calls it directly at amps/__init__.py:114 with the same three fields the component reads (count, countmin, countmax).

1. Out-of-range count is WARNING, not CAREFUL

} else {
    decoration = "careful";   // plugin returns 'WARNING'
}

These are different levels with different colours in style.scss:

So an AMP outside its configured bounds is under-reported in the WebUI relative to the TUI — the same monitor shows one severity in glances and a milder one in the browser.

2. countmin=0 with a count of 0 rendered critical

decoration = countMin === null ? "ok" : "critical";

The plugin defaults an unset bound to the observed count and then:

if int(countmin) == 0:
    return 'OK'
return 'CRITICAL'

So a configured minimum of 0 means zero processes is fine. That is a value the plugin supports deliberately — the int(countmin) == 0 branch exists for it — and conf/glances.conf documents countmin as optional. The WebUI flagged it red instead.

What did not change

The range check already matched. It is rewritten to default the bounds the way the plugin does rather than short-circuiting on null, so the two now read alike, but the behaviour for count > 0 with either bound unset is identical.

Deliberately not mirrored: the plugin's if nbprocess is None: return 'OK' guard. count is initialised to 0 in glances/amps/amp.py and only ever assigned a real count, so that branch is unreachable from the API — porting it would be dead code. Say the word if you would rather have it for symmetry.

Evidence

The WebUI has no JS test runner, so the proof is the rebuilt bundle: careful occurrences drop 18 → 17, and glances.js goes 686883 → 686922 bytes with only the component and the bundle changed.

npx eslint on the component: 0 errors. The two warnings (vue/require-default-prop, vue/no-v-html) are on untouched code and predate this change.