fix(chat,analysis,sidebar): compact cards, sparse citations, range + active state

- Chat patient cards are now compact previews (header + key stat + "Click for
  more"); cards size to content (items-start) instead of stretching to the tallest;
  Edit record moved into the summary detail dialog
- AI citations render once per source per message (collapses per-word spam) and the
  prompt now asks the model to cite sparingly (once per paragraph, not per list item)
- Sidebar sub-items use exact-match active state so Meetings no longer lights Inbox
- Analysis defaults to All Time, drops the 12m option, and clamps the chart window
  to >=2 points so 30d/Today render instead of collapsing

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/src/routes/chat.ts

@@ -165,11 +165,12 @@ function systemPrompt(
     "tool, so keep your prose a brief summary rather than re-listing every field.",
     "",
     "Citations: every retrieval tool result includes a `sourceId` (e.g. \"s1\").",
-    "When you state a fact drawn from a tool result, append an inline citation",
-    "marker immediately after that statement, in the exact form [[src:ID]] using",
-    "the matching sourceId — e.g. \"BP is well controlled [[src:s1]].\" Cite only",
-    "facts grounded in tool results, place the marker right after the relevant",
-    "sentence, and never invent or guess a sourceId.",
+    "Cite **sparingly** — add at most ONE marker per paragraph, on the single most",
+    "important record-derived claim, in the exact form [[src:ID]] using the matching",
+    "sourceId (e.g. \"BP is well controlled this quarter [[src:s1]].\"). Do NOT cite",
+    "every sentence, do NOT cite individual list items (e.g. each allergy or",
+    "medication), and never repeat the same source more than once. Cite only facts",
+    "grounded in tool results, and never invent or guess a sourceId.",
     veilActive
       ? `Privacy: this conversation runs on an external provider (${providerLabel}). Patient identifiers are de-identified as tokens like [PATIENT_1] / [MRN_1]; refer to patients generically ("this patient") rather than repeating tokens.`
       : "",