style(ui): use semantic tokens for mood and feedback indicators

Closes the v1.4.6 deferred polish item — feedback / mood / medication
status indicators now ask for *meaning* (success / warning / info)
instead of hard-coding `text-dracula-green` / `bg-dracula-orange/15`.

Adds three CSS aliases to `globals.css`:
  --success → dracula-green   (positive outcome)
  --warning → dracula-orange  (caution / attention)
  --info    → dracula-cyan    (neutral informational)

Dark mode (Dracula): each alias resolves to the same hex as before, so
the visual is pixel-identical to v1.4.6 — what changes is the *intent*
of the class.

Light mode (Alucard): the raw Dracula greens and oranges fail AA
contrast on a white card. The new tokens get higher-contrast
counterparts (#14720a, #a34d14, #036a96) that match the existing
`--destructive` / `--chart-*` light-mode swap.

Migrated callers:
  - `src/components/admin/feedback-inbox-section.tsx`:
      - BUG category badge → `destructive` (semantic — bug *is* broken)
      - "published to GitHub" badge → `success`
  - `src/components/medications/medication-card.tsx`:
      - in-window status → `success`
      - very-overdue status → `warning`
      - "late" intermediate stays on `dracula-yellow` (yellow doesn't
        map to either semantic bucket — it's mid-warning)
  - `src/components/settings/ai-section.tsx`:
      - "ChatGPT connected" badge + success toast → `success`
      - "Connection expired" badge + raw-data warning → `warning`

Charts (`src/components/charts/**`) untouched per
`feedback_charts_visual_identity.md`. Other dracula-token callsites in
settings/* (telegram, ntfy, web-push, account, about, test-connection)
are deferred to v1.5.1 — broader sweep, not in tonight's scope.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/settings/ai-section.tsx

@@ -334,7 +334,7 @@ function InsightsSettingsCard({
         </div>
         <div className="flex flex-wrap items-center gap-2">
           {settings?.codexStatus === "connected" && (
-            <Badge className="border-dracula-green/30 bg-dracula-green/15 text-dracula-green">
+            <Badge className="border-success/30 bg-success/15 text-success">
               {t("settings.ai.chatgptConnectedBadge")}
             </Badge>
           )}
@@ -344,7 +344,7 @@ function InsightsSettingsCard({
             </Badge>
           )}
           {settings?.codexStatus === "expired" && (
-            <Badge className="border-dracula-orange/30 bg-dracula-orange/15 text-dracula-orange">
+            <Badge className="border-warning/30 bg-warning/15 text-warning">
               {t("settings.ai.connectionExpiredBadge")}
             </Badge>
           )}
@@ -493,7 +493,7 @@ function InsightsSettingsCard({
         {msg && (
           <p
             role="alert"
-            className={`text-sm ${msgType === "success" ? "text-dracula-green" : "text-destructive"}`}
+            className={`text-sm ${msgType === "success" ? "text-success" : "text-destructive"}`}
           >
             {msg}
           </p>
@@ -518,7 +518,7 @@ function InsightsSettingsCard({
               </div>
             </div>
             {settings?.privacyMode === "raw" && (
-              <div className="bg-dracula-orange/15 text-dracula-orange mt-2 rounded-lg p-2 text-xs">
+              <div className="bg-warning/15 text-warning mt-2 rounded-lg p-2 text-xs">
                 {t("settings.rawDataWarning")}
               </div>
             )}
@@ -958,7 +958,7 @@ function UserAIProviderSubsection() {
       {saveMsg && (
         <p
           className={`mt-2 text-xs ${
-            saveOk ? "text-dracula-green" : "text-destructive"
+            saveOk ? "text-success" : "text-destructive"
           }`}
         >
           {saveMsg}
@@ -967,7 +967,7 @@ function UserAIProviderSubsection() {
       {testMsg && (
         <p
           className={`mt-2 text-xs ${
-            testOk ? "text-dracula-green" : "text-destructive"
+            testOk ? "text-success" : "text-destructive"
           }`}
         >
           {testMsg}