feat(chart): add @hm-design/chart package with Bar, Line, Donut, Pie, Radar, Area and Radial charts

- new workspace package packages/chart (shadcn/ui Chart + Recharts, HM Theme tokens), examples entry with sample data
- Storybook Chart group (src/chart), consumer example (examples/chart), build:chart / build:chart-example scripts
- README rewritten as the AI usage guide (install, CSS wiring, chart selection, data rules, verification)
- docs: package count/list, Submodule guide (chart workspace, React dedupe), shared AI_GUIDE row, MAINTAINING, story inventory

.storybook/qa/STORY-INVENTORY.md

@@ -6,16 +6,16 @@ This is a classification record. No Story IDs, exports or titles are renamed. HI
 
 ## Summary
 
-- PRIMARY: 82
+- PRIMARY: 89
 - VERIFICATION: 252
 - UTILITY: 38
 - LEGACY / DUPLICATE: 0
-- KEEP: 82
+- KEEP: 89
 - HIDE: 290
 - MERGE_CANDIDATE: 33
 - DELETE_CANDIDATE: 0
-- Story files: 82
-- Stories: 372
+- Story files: 89
+- Stories: 379
 - Hierarchy: Foundation → Components → Patterns → Center Graphic → Theme
 
 ## Full inventory
@@ -58,6 +58,48 @@ Source: `src/center/center-title.stories.tsx`; meta.tags: []
 - Compositions — Title; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
 - Playground — Playground; tags: ["verification"]; UTILITY; HIDE. Keep direct URL and tag-filter access; excluded from default sidebar.
 
+### Chart/Area Chart
+
+Source: `src/chart/area-chart.stories.tsx`; meta.tags: []
+
+- Area — Area Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
+### Chart/Bar Chart
+
+Source: `src/chart/bar-chart.stories.tsx`; meta.tags: []
+
+- Bar — Bar Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
+### Chart/Donut Chart
+
+Source: `src/chart/donut-chart.stories.tsx`; meta.tags: []
+
+- Donut — Donut Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
+### Chart/Line Chart
+
+Source: `src/chart/line-chart.stories.tsx`; meta.tags: []
+
+- Line — Line Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
+### Chart/Pie Chart
+
+Source: `src/chart/pie-chart.stories.tsx`; meta.tags: []
+
+- Pie — Pie Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
+### Chart/Radar Chart
+
+Source: `src/chart/radar-chart.stories.tsx`; meta.tags: []
+
+- Radar — Radar Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
+### Chart/Radial Chart
+
+Source: `src/chart/radial-chart.stories.tsx`; meta.tags: []
+
+- Radial — Radial Chart; tags: []; PRIMARY; KEEP. Representative story or distinct reference page.
+
 ### Components/Disclosure/Accordion
 
 Source: `src/components/accordion.stories.tsx`; meta.tags: []