design(decisions): footer-left "View …" context link, overflow slimmed (4a)

Promote the context pathway out of the overflow menu into an
always-visible footer-left ghost link on every card — active, expanded,
and curtain rows alike. The overflow menu keeps only Snooze/Dismiss.

- SOURCE_META gains a per-source contextLabel named for where
  subject.href actually lands ("View thread", "View request", "View
  run", "View issue", …) so the link never over-promises.
- The footer band splits context-left / CTAs-right (justify-between);
  the 3a justify-end contract moves to the CTA group. Two tests that
  encoded the pre-4a shape (first-anchor-is-CTA in the review deep-link
  test, justify-end on the outer band) update accordingly, plus new
  coverage for link presence, footer-left position, expanded
  persistence, and curtain rows.

Verified: token gates 3/3 CLEAN, pnpm typecheck green, ui vitest
2537/2537, light+dark before/after screenshots reviewed.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

doc/design/DECISION-SHEET.md

@@ -39,6 +39,10 @@ Every open question from TOKEN-AUDIT.md §8 + batch logs and COMPONENT-INVENTORY
 | C10 | FeatureGate wrapper pattern (3 near-identical gates) | Nice-to-have shared primitive; backlog, not a run | APPROVED — backlog nice-to-have, not a run |
 | C11 | Sidebar agents section: hand-rolled rows (own spacing/icon colors, palette-blue liveness dot) instead of `SidebarNavItem`; only section that is collapsible | Run 3 item: unify rows onto `SidebarNavItem`, settle collapsibility policy across sections, liveness dot → canonical status blue. Wholesale shadcn Sidebar adoption REJECTED for now (app already has equivalent machinery incl. icon-rail height trick; highest-regression chrome) — re-evaluate as a dedicated item after Run 3 only if its behaviors (kbd shortcut, persisted state, mobile sheet) are wanted | DONE (Run 3, Jul 7) — agent rows render via `SidebarNavItem` (new additive props: `iconNode`, `active`, `dense`, `trailing`, `liveAccessory`); all live dots (agents + nav rows, rail + expanded) now use `--status-agent-running` (#2563eb, was palette blue-500 #3b82f6 — small hue-darkening delta, per-C11 mandate; "N live" text keeps its palette classes for Run 4). **Collapsibility policy** (superseded Jul 8 by user review): EVERY labeled section (Work, Company, Projects, Agents) is collapsible, default-open, session-scoped state — one affordance everywhere. "See all agents" stays a plain muted Link on purpose (must not adopt active-route highlighting). 48 sidebar vitest assertions pass unchanged. |
 
+## Decisions-page context pathway → footer-left "View … →" link, overflow slimmed (PAP-317 / PAP-313 anatomy 4a, Jul 14 2026)
+
+Every Decisions card with a source href now carries an always-visible footer-left ghost link (muted text + `→`, hover foreground/underline) in the same footer band as the 3a CTAs; the overflow menu keeps only Snooze/Dismiss ("Open source" is gone — the menu no longer hides navigation). Judgment calls in the same commit: (1) **labels name the href's real destination**, via a per-source `contextLabel` in `SOURCE_META` — "View thread" (interactions), "View request" (approvals), "View members" (join requests), "View run" (failed runs), "View budget" (budget alerts), "View agent" (agent errors), "View issue" (recovery/productivity/blocker/review) — rather than echoing the concept artifact's content-specific labels ("View PR"), so the link never over-promises (e.g. recovery cards link to the issue, not a run page); (2) **the link stays in the card body while the resolver is expanded** instead of moving into the resolver's button row as the concept sketches — resolver internals are out of scope per the plan, and a stable position beats a migrating one; (3) **curtain rows get the link too** (beside Restore), matching the approved concept; (4) deep-link cards show both the ghost link and the solid Open/Review CTA even though they share an href — anatomy consistency (every card: context left, verbs right) is the point of 4a.
+
 ## Decisions-page type signal → mono icon + label, accent bar removed (PAP-315 / PAP-313 anatomy 1a, Jul 14 2026)
 
 The five-tone type→color system (sky/violet/rose/amber/neutral accent bar + tinted source icon) is retired from the Decisions feed: the left accent bar is deleted and the source icon renders in `text-muted-foreground`, so a row's type reads through icon shape + text label alone and color is freed up for severity (Critical `destructive`, per 2a) and CTAs. Judgment call in the same commit: `attentionTone`/`attentionToneStyle`/`TONE_STYLE` (lib/attention.ts) were deleted rather than kept as an unused map — a repo-wide grep found exactly one consumer (AttentionQueueRow itself), so no other surface loses the palette and no debt remains; the tone unit tests went with them (type identity is still covered by the `sourceMeta` label/icon tests).