W9-5: Tooltip sweep — HelpTip helper + per-view decode (#533)

* [W9-5a] Tooltip sweep foundation: HelpTip helper + shared cryptic badges

HelpTip: DRY wrapper over the verbose 3-element Radix Tooltip pattern so a
broad sweep stays a one-line wrap per site (falsy label short-circuits to the
bare child). Unit-tested (3 cases).

TaskStatusBadge + AgentStateBadge: the panel's most cryptic, most-frequent
elements (15 task lifecycle states, 11 agent states) had no explanation
anywhere. Add a per-state tooltip via HelpTip, with the canonical text in one
description map and exported as taskStatusDescription / agentStateDescription
so the per-view inline renderers (kanban, task header) reuse it instead of
re-declaring. This is part 1 of the W9-5 tooltip sweep; the per-view inline
surfaces follow in subsequent PRs.

* [W9-5b] Per-view tooltip sweep: decode cryptic badges, icon-only buttons, status dots

35 HelpTip additions across 22 panel components, reusing the W9-5a
helper plus taskStatusDescription/agentStateDescription. Tipped:
task-id/commit-hash/branch/PR badges, severity/origin/status badges,
priority (P0-P3), migration/shared flags, MegaTask umbrella badge,
Review Gate / For Resumption / Confidential note badges, icon-only
view/delete/edit/clear/show-hide buttons, semver bump + gate-state
badges, ahead-not-pushed badge. Skipped self-explanatory labeled
buttons and elements already carrying title=.

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Co-authored-by: Renn F <rennf93@users.noreply.github.com>

panel/src/components/git/git-log-panel.tsx

@@ -9,6 +9,7 @@ import { ScrollArea } from "@/components/ui/scroll-area";
 import { cn } from "@/lib/utils";
 import { GitCommit, User, Calendar } from "lucide-react";
 import { formatDistanceToNow } from "date-fns";
+import { HelpTip } from "@/components/ui/help-tip";
 
 interface GitLogPanelProps {
   log: GitLogResponse | undefined;
@@ -105,12 +106,14 @@ export function GitLogPanel({
                       <p className="text-sm font-medium leading-snug line-clamp-2">
                         {commit.message}
                       </p>
-                      <Badge
-                        variant="outline"
-                        className="font-mono text-xs shrink-0"
-                      >
-                        {commit.short_hash}
-                      </Badge>
+                      <HelpTip label="Short commit hash">
+                        <Badge
+                          variant="outline"
+                          className="font-mono text-xs shrink-0"
+                        >
+                          {commit.short_hash}
+                        </Badge>
+                      </HelpTip>
                     </div>
                     <div className="flex items-center gap-3 mt-1 text-xs text-muted-foreground">
                       <span className="flex items-center gap-1">