refactor(renderer): route all Phosphor icon imports through ui/icons barrel

Create src/renderer/components/ui/icons.ts as the single re-export point
for every Phosphor icon the renderer touches, then rewrite the 95 files
that previously imported directly from "@phosphor-icons/react" to pull
from the relative-path-to-barrel instead. The TitleBar commit earlier
in this series already used ui/icons; this commit extends the pattern
to the rest of the renderer.

Benefits now wired in:
  - one location where bundle tree-shaking can be reasoned about,
  - typos like Briefcase vs BriefCase show up against a finite list,
  - re-theming or swapping icon sets is a one-file edit,
  - a lint rule that flags raw @phosphor-icons/react imports can be
    added later without mass-rewriting call sites.

The barrel also re-exports the `Icon` type so call sites that type
icon props against the Phosphor component type work unchanged.

Test count stays at 363 passing; typecheck stays at 156 errors.

src/renderer/views/CommandPaletteView.tsx

@@ -6,7 +6,7 @@ import {
   Target,
   TerminalWindow,
   UsersThree,
-} from "@phosphor-icons/react";
+} from "../components/ui/icons";
 import type { AgentRecord, GoalRecord, ProjectRecord, RunRecord, SectionId, TaskRecord } from "@shared/types";
 import { ListFrame, ListRow, StatusPill } from "../components/ui";
 

src/renderer/views/ConsoleView.tsx

@@ -1,6 +1,6 @@
 import { useMemo } from "react";
 import { AnimatePresence, motion } from "framer-motion";
-import { FolderOpen, TerminalWindow, X } from "@phosphor-icons/react";
+import { FolderOpen, TerminalWindow, X } from "../components/ui/icons";
 import type { RunRecord } from "@shared/types";
 import { ActionButton, Select, StatusPill } from "../components/ui";
 import { formatMoney, formatTime } from "../lib/formatters";

src/renderer/views/SectionContentView.tsx

@@ -1,5 +1,5 @@
 import { AnimatePresence, motion } from "framer-motion";
-import { WarningCircle } from "@phosphor-icons/react";
+import { WarningCircle } from "../components/ui/icons";
 import type { SectionId } from "@shared/types";
 import { ErrorBoundary } from "../components/ui";
 import { OrganizationSections } from "./sections/OrganizationSections";

src/renderer/views/SidebarView.tsx

@@ -6,7 +6,7 @@ import {
   Plus,
   SidebarSimple,
   Trash,
-} from "@phosphor-icons/react";
+} from "../components/ui/icons";
 import type { CompanyRecord, ProfileSnapshot, SectionId } from "@shared/types";
 import { SectionButton } from "../components/ui";
 import { NEW_ENTITY_ID } from "../lib/constants";

src/renderer/views/sections/ExecutionSections.tsx

@@ -5,7 +5,7 @@ import {
   Kanban,
   ListChecks,
   Target,
-} from "@phosphor-icons/react";
+} from "../../components/ui/icons";
 import { ConnectorEditor } from "../../components/connectors";
 import { KanbanBoard } from "../../components/dashboard";
 import { TwoPaneLayout } from "../../components/TwoPaneLayout";

src/renderer/views/sections/OrganizationSections.tsx

@@ -4,7 +4,7 @@ import {
   Target,
   UserPlus,
   Kanban,
-} from "@phosphor-icons/react";
+} from "../../components/ui/icons";
 import {
   AgentCreator,
   AgentEditor,