Refinement round: ring popover down, menu order, tok unit, list indent, lowercase levels

Five small fixes (owner refinement round, 2026-09-24):

1. RING POPOVER OPENS DOWN: the ring lives in the chat top bar —
   the window's top edge is right above it, so the upward popover was
   clipped. top-full mt-1.5 now: it drops below the ring.

2. SESSION MENU ORDER FLIPPED: Rename/Delete first, hairline, then
   the extraction coverage block + Extract at the bottom — the info
   reads after the actions (was the reverse, the block on top).

3. UNIT TYPED OUT: the sidebar block reads "2k tok uncovered" now —
   the tokens unit is explicit (owner: "tok").

4. MARKDOWN LIST INDENT: streamdown ships list-inside with no
   container padding — top-level markers sat ON the text edge (only
   nested lists got their pl-6 via [li_&]). .lh-prose :where(ul, ol)
   { padding-left: 1.5rem } indents both list kinds as blocks, 24px —
   the same measure as the nested-case pl-6. Unlayered CSS beats the
   utility layer; :where keeps specificity zero.

5. THINKING LEVELS LOWERCASE EVERYWHERE: the composer pill and setup
   dialog rendered THINKING_LABEL (Off/Minimal/…/Max) while every
   menu body renders the raw lowercase level — the map is now
   lowercase, the level string IS the display form, everywhere.

Live-verified on :3001: list content inset 24px vs paragraphs
(padding-left computed 24px, nested fine); the composer pill reads
"low" with options low/high/max; menu order Rename → Delete… →
hairline → block. 901/901.

components/extraction-coverage.tsx

@@ -97,7 +97,7 @@ async function requestExtract(chatId: string): Promise<boolean> {
 // ─── The sidebar context menu's coverage block ──────────────────────────────
 
 /**
- * The info block at the top of the session context menu (owner-locked
+ * The info block at the bottom of the session context menu (owner-locked
  * redesign): what the extractor hasn't covered yet, plus the manual Extract
  * affordance — visually separated from Rename/Delete below (those stay the
  * two session-management actions). Fetched ON MENU OPEN (the block mounts
@@ -191,7 +191,7 @@ export function CoverageMenuBody({
 			) : (
 				<span className="flex flex-col">
 					<span className="tabular-nums text-foreground">
-						{formatTokens(coverage.uncoveredTokens)} uncovered
+						{formatTokens(coverage.uncoveredTokens)} tok uncovered
 					</span>
 					<span className="tabular-nums text-muted-foreground">
 						{coverage.uncoveredCount} message{coverage.uncoveredCount === 1 ? "" : "s"} unextracted
@@ -305,7 +305,7 @@ export function CoverageRing({ chatId, refreshKey = 0 }: { chatId: string; refre
 			{open && (
 				<div
 					data-testid="coverage-ring-popover"
-					className="absolute bottom-full right-0 z-40 mb-1.5 w-64 rounded-xl border bg-card p-3 text-xs shadow-xl"
+					className="absolute top-full right-0 z-40 mt-1.5 w-64 rounded-xl border bg-card p-3 text-xs shadow-xl"
 				>
 					<CoverageRingDetail coverage={coverage} chunkTokens={graph.chunkTokens} />
 				</div>