feat(hold-overview): add Hold Lot Overview page with TreeMap, Matrix, and cascade filtering

Provide managers with a dedicated page to analyze hold lots across all stations.
Extends existing service functions (get_hold_detail_summary, get_hold_detail_lots,
get_wip_matrix) with optional parameters for backward compatibility, adds one new
function (get_hold_overview_treemap), and registers the page in the portal navigation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

openspec/changes/archive/2026-02-10-hold-lot-overview/.openspec.yaml

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+schema: spec-driven
+created: 2026-02-10

openspec/changes/archive/2026-02-10-hold-lot-overview/design.md

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+## Context
+
+MES Dashboard 已有 WIP Overview（全局 RUN/QUEUE/HOLD 概況）和 Hold Detail（單一 Hold Reason 明細）。主管需要一個專用頁面，聚焦在 Hold Lot 的全局分析。
+
+現有架構：Vue 3 SFC + Flask + Oracle（DWH.DW_MES_LOT_V），使用 Redis cache + snapshot indexes 加速查詢。經審計，wip_service.py 中已有大量可複用的函數和 cache 基礎設施：
+
+**可直接呼叫**:
+- `get_wip_matrix(status='HOLD', hold_type=...)` — Matrix 查詢，零改動
+- `_select_with_snapshot_indexes(status='HOLD', hold_type=...)` — 已有 `wip_status['HOLD']` 和 `hold_type['quality'|'non-quality']` snapshot indexes
+- `_get_wip_dataframe()` — L1 process cache (30s) → L2 Redis cache，`AGEBYDAYS` 欄位已在 View 中預先計算
+
+**可擴充（向後相容）**:
+- `get_hold_detail_summary(reason)` — 已有 totalLots/totalQty/avgAge/maxAge/workcenterCount，reason 改 optional 即可
+- `get_hold_detail_lots(reason, ...)` — 已有完整分頁邏輯 + workcenter/package/age_range 過濾，reason 改 optional + 加 hold_type 即可
+
+**前端可直接 import**:
+- `hold-detail/SummaryCards.vue` — props `{ totalLots, totalQty, avgAge, maxAge, workcenterCount }` 完全相容
+- `wip-shared/Pagination.vue`、`useAutoRefresh`、`core/api.js`、`wip-shared/constants.js`
+
+## Goals / Non-Goals
+
+**Goals:**
+- 提供主管一覽各站 Hold Lot 情況的獨立頁面
+- TreeMap 視覺化讓嚴重程度一目了然（面積=QTY，顏色=滯留天數）
+- Matrix + TreeMap + Table 三層 cascade 篩選，互動流暢
+- 預設品質異常 Hold，可切換
+- 最大化複用現有 service 函數、cache 基礎設施和前端元件
+
+**Non-Goals:**
+- 不取代或修改現有 Hold Detail 頁面（擴充 service 函數需向後相容）
+- 不新增資料庫 view 或 table — 完全複用 DWH.DW_MES_LOT_V
+- 不新增 SQL 模板 — 複用現有 summary.sql / matrix.sql / detail.sql + QueryBuilder WHERE clause
+- 不實作 autocomplete 搜尋（篩選僅 Hold Type + Reason dropdown）
+- 不實作 Lot 點擊展開的 detail panel（明細表為純展示）
+
+## Decisions
+
+### D1: 擴充現有 service 函數，非新建
+
+**決定**: 擴充 `get_hold_detail_summary()` 和 `get_hold_detail_lots()` 的參數簽名，而非建立新的 `get_hold_overview_summary()` / `get_hold_overview_lots()`。唯一全新的函數是 `get_hold_overview_treemap()`（WC × Reason 聚合邏輯不存在於現有函數）。
+
+**擴充方式**:
+- `get_hold_detail_summary(reason)` → `get_hold_detail_summary(reason=None, hold_type=None)`
+  - `reason=None` 時聚合所有 HOLD lots
+  - `hold_type='quality'|'non-quality'` 進一步過濾
+  - 原有 Hold Detail 呼叫 `get_hold_detail_summary(reason='xxx')` 行為不變
+- `get_hold_detail_lots(reason, ...)` → `get_hold_detail_lots(reason=None, hold_type=None, treemap_reason=None, ...)`
+  - `reason=None` 時返回所有 HOLD lots
+  - `treemap_reason` 支援 TreeMap 點擊篩選
+  - 現有 Hold Detail 呼叫簽名不受影響
+
+**理由**: 這兩個函數的核心邏輯（cache path + Oracle fallback + 分頁 + 過濾）完全相同，差異僅在 reason 是否為必填。新建函數會複製 80%+ 相同邏輯，增加維護負擔。
+
+**替代方案**: 新建獨立函數 — 但會造成大量重複的 cache 查詢路徑和 Oracle fallback 邏輯。
+
+### D2: Matrix API 直接呼叫 get_wip_matrix，僅擴充 reason 參數
+
+**決定**: Hold Overview 的 Matrix API 直接呼叫現有 `get_wip_matrix(status='HOLD', hold_type=...)` 函數。唯一需要擴充的是新增 optional `reason` 參數，支援 Filter Bar 的 Reason 篩選。
+
+**理由**: `get_wip_matrix` 已支援 `status` 和 `hold_type` 參數，能完全滿足 Hold Overview Matrix 的需求。擴充 reason 參數的改動量極小，且 reason=None 時行為與現有完全一致。
+
+**替代方案**: 複製 matrix 邏輯到新函數 — 違反 DRY，且 matrix 排序/分頁邏輯會分散維護。
+
+### D3: TreeMap 聚合是唯一需要全新建立的 service 函數
+
+**決定**: 新增 `get_hold_overview_treemap()` 函數，後端返回已聚合的 `{ workcenter, reason, qty, lots, avgAge }` 陣列。此函數使用與其他函數相同的 `_select_with_snapshot_indexes()` + Oracle fallback 模式。
+
+**理由**: 現有函數都沒有「按 (WORKCENTER_GROUP, HOLDREASONNAME) 二維聚合」的邏輯。這是 TreeMap 視覺化特有的需求，值得獨立建立。Hold Lot 可能數千筆，前端 groupBy 聚合會造成不必要的資料傳輸和 CPU 開銷。
+
+**替代方案**: 前端從 lots API 取全部資料後自行聚合 — 資料量大時效能差，且需一次載入所有 lot。
+
+### D4: TreeMap 顏色映射使用固定 4 級色階
+
+**決定**: 平均滯留天數映射到 4 個顏色等級：
+- `< 1 天` → 綠色 (#22c55e)
+- `1-3 天` → 黃色 (#eab308)
+- `3-7 天` → 橙色 (#f97316)
+- `> 7 天` → 紅色 (#ef4444)
+
+ECharts TreeMap 使用 `visualMap` 組件實現連續色階。
+
+**理由**: 與 Hold Detail 的 Age Distribution 分段一致（0-1, 1-3, 3-7, 7+），主管認知模型統一。
+
+### D5: Filter cascade 為前端狀態管理，不影響 Summary 和 Matrix 的 API 呼叫
+
+**決定**:
+- Filter Bar（Hold Type / Reason）變更 → 呼叫全部 4 支 API
+- Matrix 點擊 → 前端設定 `matrixFilter`，僅呼叫 treemap + lots API
+- TreeMap 點擊 → 前端設定 `treemapFilter`，僅呼叫 lots API
+
+**理由**: Summary 和 Matrix 反映全局數據，不應被 Matrix/TreeMap 的 drilldown 操作影響。這與 WIP Overview 的 StatusCards 不影響 Summary 的模式一致。
+
+### D6: 路由結構與 Blueprint 獨立
+
+**決定**: 新建 `hold_overview_routes.py` 作為獨立 Blueprint（`hold_overview_bp`），路由前綴 `/api/hold-overview/`。頁面路由 `GET /hold-overview` 由此 Blueprint 提供。
+
+**理由**: 與 `hold_routes.py`（Hold Detail）和 `wip_routes.py`（WIP Overview）平行，職責分離。
+
+### D7: 前端元件複用策略 — import > 擴充 > 新建
+
+**決定**:
+
+| 元件 | 策略 | 理由 |
+|------|------|------|
+| `hold-detail/SummaryCards.vue` | **直接 import** | props 形狀 `{ totalLots, totalQty, avgAge, maxAge, workcenterCount }` 完全相容 |
+| `wip-shared/Pagination.vue` | **直接 import** | 已由 hold-detail/LotTable 使用，通用元件 |
+| `wip-overview/MatrixTable.vue` | **參考新建 `HoldMatrix.vue`** | 需要 cell click + column click + active highlight — 原有只有 row drilldown，改動幅度大不適合直接修改原件 |
+| `hold-detail/LotTable.vue` | **參考新建 `LotTable.vue`** | 需加 Hold Reason 欄位 + 移除 Spec 欄位 — hold-detail 不需要 reason 欄（已在 URL 參數中），直接修改會破壞現有頁面 |
+| `HoldTreeMap.vue` | **全新** | 無現有 TreeMap 元件 |
+| `FilterBar.vue` | **全新** | Hold Type radio + Reason dropdown 是此頁獨有的 UI |
+| `FilterIndicator.vue` | **全新** | cascade filter 指示器是此頁獨有的 UI |
+
+**理由**: 直接修改跨頁面共用的元件有破壞現有頁面的風險。props 完全相容的元件直接 import；需要結構性改動的元件則基於現有程式碼新建，保留一致的 coding pattern 但避免耦合。
+
+### D8: ECharts TreeMap 模組 tree-shaking
+
+**決定**: 前端使用 `import { TreemapChart } from 'echarts/charts'` 按需導入，搭配現有 `vendor-echarts` chunk。
+
+**理由**: 現有 ECharts vendor chunk 已包含 BarChart、LineChart 等。TreemapChart 加入後仍在同一 chunk，不增加額外 HTTP request。
+
+## Risks / Trade-offs
+
+- **[向後相容]** 擴充 `get_hold_detail_summary()` 和 `get_hold_detail_lots()` 簽名時，必須確保 reason 參數的預設行為不變 → 使用 `reason=None` 預設值，現有呼叫端傳入 reason 的行為完全不變；需補充單元測試覆蓋原有 Hold Detail 的呼叫路徑
+- **[TreeMap 資料量]** 如果 Hold Reason 種類很多（>20），TreeMap 小區塊會難以辨識 → 可考慮只顯示 Top N reason，其餘歸為「其他」
+- **[Matrix 與 TreeMap 同時篩選]** 使用者可能忘記已有 matrix 篩選，誤以為 TreeMap 是全局 → 需要明確的 active filter 指示器和一鍵清除功能
+- **[ECharts TreeMap 效能]** 大量區塊時 TreeMap 渲染可能卡頓 → ECharts TreeMap 有內建 leafDepth 限制，測試時注意超過 200 個葉節點的情境
+- **[Cache 一致性]** Hold Overview 與 WIP Overview 共用同一份 cache，auto-refresh 週期相同（10 分鐘），不需調整 cache 策略

openspec/changes/archive/2026-02-10-hold-lot-overview/proposal.md

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+## Why
+
+主管需要一個獨立頁面，專注於線上 Hold Lot 的全局觀。目前 WIP Overview 的 Pareto 圖混合在所有 WIP 資料中，而 Hold Detail 只能看單一 Hold Reason 的明細。缺少一個可以「一覽各站 Hold Lot 情況」的專用分析頁面，讓主管能快速掌握哪些站別、哪些原因造成最多 Hold，以及滯留嚴重程度。
+
+## What Changes
+
+- 新增 `/hold-overview` 頁面（Vue 3 SFC + ECharts TreeMap），獨立於現有 WIP Overview 和 Hold Detail
+- 新增 Flask Blueprint 與 4 支 API endpoints（summary / matrix / treemap / lots）
+- 頁面預設只顯示品質異常 Hold，可切換至非品質異常或全部
+- 提供 Workcenter x Package Matrix（如 WIP Overview），數字可點擊篩選下方所有資料
+- 提供 TreeMap 視覺化（WC → Reason 層級，面積=QTY，顏色=平均滯留天數）
+- 提供 paginated Hold Lot 明細表
+- 篩選 cascade 機制：Filter Bar → 全部重載；Matrix 點擊 → TreeMap + Table；TreeMap 點擊 → Table
+- 新增 Vite multi-entry 設定
+
+## Capabilities
+
+### New Capabilities
+- `hold-overview-page`: Hold Lot Overview 頁面的完整功能規格，包含篩選器、Summary Cards、Matrix、TreeMap、明細表及 filter cascade 互動邏輯
+- `hold-overview-api`: Hold Overview 後端 API 端點（summary / matrix / treemap / lots），從 DWH.DW_MES_LOT_V 查詢 Hold Lot 資料
+
+### Modified Capabilities
+- `vue-vite-page-architecture`: 新增 `hold-overview` 作為 Vite multi-entry HTML entry point
+
+## Impact
+
+- **Backend（擴充現有）**: 擴充 `wip_service.py` 中 `get_hold_detail_summary()` 和 `get_hold_detail_lots()` — 將 `reason` 改為 optional 並新增 `hold_type` 參數，向後相容；擴充 `get_wip_matrix()` 新增 optional `reason` 參數
+- **Backend（唯一新增函數）**: `get_hold_overview_treemap()` — WC × Reason 聚合 + avgAge 計算
+- **Backend（新增路由）**: `src/mes_dashboard/routes/hold_overview_routes.py`（Flask Blueprint，4 支 API）
+- **Frontend（直接複用）**: `hold-detail/SummaryCards.vue`、`wip-shared/Pagination.vue`、`useAutoRefresh`、`core/api.js`、`wip-shared/constants.js`
+- **Frontend（基於現有擴充）**: 基於 `MatrixTable.vue` 建 `HoldMatrix.vue`（加 cell/column click）；基於 `hold-detail/LotTable.vue` 建 `LotTable.vue`（加 Hold Reason 欄位）
+- **Frontend（全新元件）**: `HoldTreeMap.vue`、`FilterBar.vue`、`FilterIndicator.vue`
+- **Vite Config**: `vite.config.js` 新增 `hold-overview` entry
+- **Dependencies**: `echarts/charts` 的 `TreemapChart`（進入現有 `vendor-echarts` chunk）
+- **Cache**: 完全複用現有 Redis cache + snapshot indexes（已有 `wip_status['HOLD']` 和 `hold_type['quality'|'non-quality']` 索引），零改動
+- **SQL**: 不需新增 SQL 模板 — 複用現有 summary.sql / matrix.sql / detail.sql + QueryBuilder WHERE clause

openspec/changes/archive/2026-02-10-hold-lot-overview/specs/hold-overview-api/spec.md

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+## ADDED Requirements
+
+### Requirement: Hold Overview API SHALL provide summary statistics
+The API SHALL return aggregated summary KPIs for hold lots.
+
+#### Scenario: Summary endpoint delegates to extended get_hold_detail_summary
+- **WHEN** `GET /api/hold-overview/summary` is called with `hold_type=quality`
+- **THEN** the route SHALL delegate to the extended `get_hold_detail_summary(reason=None, hold_type='quality')`
+- **THEN** the response SHALL return `{ success: true, data: { totalLots, totalQty, workcenterCount, avgAge, maxAge, dataUpdateDate } }`
+- **THEN** only lots with EQUIPMENTCOUNT=0 AND CURRENTHOLDCOUNT>0 SHALL be included
+- **THEN** hold_type classification SHALL use the same NON_QUALITY_HOLD_REASONS set as existing hold endpoints
+
+#### Scenario: Summary with reason filter
+- **WHEN** `GET /api/hold-overview/summary?hold_type=quality&reason=品質確認` is called
+- **THEN** the response SHALL only include lots where HOLDREASONNAME equals the specified reason
+
+#### Scenario: Summary hold_type=all
+- **WHEN** `GET /api/hold-overview/summary?hold_type=all` is called
+- **THEN** the response SHALL include both quality and non-quality hold lots
+
+#### Scenario: Summary error
+- **WHEN** the database query fails
+- **THEN** the response SHALL return `{ success: false, error: '查詢失敗' }` with HTTP 500
+
+### Requirement: Hold Overview API SHALL provide workcenter x package matrix
+The API SHALL return a cross-tabulation of workcenters and packages for hold lots.
+
+#### Scenario: Matrix endpoint
+- **WHEN** `GET /api/hold-overview/matrix` is called with `hold_type=quality`
+- **THEN** the response SHALL return the same matrix structure as `/api/wip/overview/matrix`: `{ workcenters, packages, matrix, workcenter_totals, package_totals, grand_total }`
+- **THEN** workcenters SHALL be sorted by WORKCENTERSEQUENCE_GROUP
+- **THEN** packages SHALL be sorted by total QTY descending
+- **THEN** only HOLD status lots matching the hold_type SHALL be included
+
+#### Scenario: Matrix delegates to existing get_wip_matrix
+- **WHEN** the matrix endpoint is called
+- **THEN** it SHALL delegate to `get_wip_matrix(status='HOLD', hold_type=...)` from wip_service.py
+
+#### Scenario: Matrix with reason filter
+- **WHEN** `GET /api/hold-overview/matrix?hold_type=quality&reason=品質確認` is called
+- **THEN** the matrix SHALL only include lots where HOLDREASONNAME equals the specified reason
+
+### Requirement: Hold Overview API SHALL provide TreeMap aggregation data
+The API SHALL return aggregated data suitable for TreeMap visualization.
+
+#### Scenario: TreeMap endpoint uses new get_hold_overview_treemap function
+- **WHEN** `GET /api/hold-overview/treemap` is called with `hold_type=quality`
+- **THEN** the route SHALL delegate to `get_hold_overview_treemap()` (the only new service function)
+- **THEN** the response SHALL return `{ success: true, data: { items: [...] } }`
+- **THEN** each item SHALL contain `{ workcenter, reason, lots, qty, avgAge }`
+- **THEN** items SHALL be grouped by (WORKCENTER_GROUP, HOLDREASONNAME)
+- **THEN** avgAge SHALL be calculated using the pre-computed AGEBYDAYS column from DW_MES_LOT_V
+
+#### Scenario: TreeMap with matrix filter
+- **WHEN** `GET /api/hold-overview/treemap?hold_type=quality&workcenter=WC-MOLD&package=PKG-A` is called
+- **THEN** the response SHALL only include lots matching the workcenter AND package filters
+
+#### Scenario: TreeMap with reason filter
+- **WHEN** `GET /api/hold-overview/treemap?hold_type=quality&reason=品質確認` is called
+- **THEN** the response SHALL only include lots where HOLDREASONNAME equals the specified reason
+
+#### Scenario: TreeMap empty result
+- **WHEN** no hold lots match the filters
+- **THEN** the response SHALL return `{ success: true, data: { items: [] } }`
+
+### Requirement: Hold Overview API SHALL provide paginated lot details
+The API SHALL return a paginated list of hold lot details.
+
+#### Scenario: Lots endpoint delegates to extended get_hold_detail_lots
+- **WHEN** `GET /api/hold-overview/lots?hold_type=quality&page=1&per_page=50` is called
+- **THEN** the route SHALL delegate to the extended `get_hold_detail_lots(reason=None, hold_type='quality', ...)`
+- **THEN** the response SHALL return `{ success: true, data: { lots: [...], pagination: { page, perPage, total, totalPages } } }`
+- **THEN** each lot SHALL contain: lotId, workorder, qty, package, workcenter, holdReason, age, holdBy, dept, holdComment
+- **THEN** lots SHALL be sorted by age descending (longest hold first)
+
+#### Scenario: Lots with matrix filter
+- **WHEN** `GET /api/hold-overview/lots?hold_type=quality&workcenter=WC-MOLD&package=PKG-A` is called
+- **THEN** only lots matching the workcenter AND package filters SHALL be returned
+
+#### Scenario: Lots with treemap filter
+- **WHEN** `GET /api/hold-overview/lots?hold_type=quality&workcenter=WC-MOLD&treemap_reason=品質確認` is called
+- **THEN** only lots matching the workcenter AND treemap_reason SHALL be returned
+
+#### Scenario: Lots with all filters combined
+- **WHEN** `GET /api/hold-overview/lots?hold_type=quality&reason=品質確認&workcenter=WC-MOLD&package=PKG-A&treemap_reason=品質確認` is called
+- **THEN** all filters SHALL be applied as AND conditions
+
+#### Scenario: Lots pagination bounds
+- **WHEN** `page` is less than 1
+- **THEN** page SHALL be treated as 1
+- **WHEN** `per_page` exceeds 200
+- **THEN** per_page SHALL be capped at 200
+
+#### Scenario: Lots error
+- **WHEN** the database query fails
+- **THEN** the response SHALL return `{ success: false, error: '查詢失敗' }` with HTTP 500
+
+### Requirement: Hold Overview API SHALL apply rate limiting
+The API SHALL apply rate limiting to expensive endpoints.
+
+#### Scenario: Rate limit on lots endpoint
+- **WHEN** the lots endpoint receives excessive requests
+- **THEN** rate limiting SHALL be applied using `configured_rate_limit` with a default of 90 requests per 60 seconds
+
+#### Scenario: Rate limit on matrix endpoint
+- **WHEN** the matrix endpoint receives excessive requests
+- **THEN** rate limiting SHALL be applied using `configured_rate_limit` with a default of 120 requests per 60 seconds
+
+### Requirement: Hold Overview page route SHALL serve static Vite HTML
+The Flask route SHALL serve the pre-built Vite HTML file.
+
+#### Scenario: Page route
+- **WHEN** user navigates to `/hold-overview`
+- **THEN** Flask SHALL serve the pre-built HTML file from `static/dist/hold-overview.html` via `send_from_directory`
+- **THEN** the HTML SHALL NOT pass through Jinja2 template rendering
+
+#### Scenario: Fallback HTML
+- **WHEN** the pre-built HTML file does not exist
+- **THEN** Flask SHALL return a minimal HTML page with the correct script tag and module import
+
+### Requirement: Extended service functions SHALL maintain backward compatibility
+The extended `get_hold_detail_summary()`, `get_hold_detail_lots()`, and `get_wip_matrix()` SHALL not break existing callers.
+
+#### Scenario: Hold Detail summary backward compatibility
+- **WHEN** existing Hold Detail code calls `get_hold_detail_summary(reason='xxx')`
+- **THEN** the result SHALL be identical to the pre-extension behavior
+- **THEN** the new `hold_type` parameter SHALL default to None (no additional filtering)
+
+#### Scenario: Hold Detail lots backward compatibility
+- **WHEN** existing Hold Detail code calls `get_hold_detail_lots(reason='xxx', workcenter=..., package=..., age_range=...)`
+- **THEN** the result SHALL be identical to the pre-extension behavior
+- **THEN** the new `hold_type` and `treemap_reason` parameters SHALL default to None
+
+#### Scenario: WIP Overview matrix backward compatibility
+- **WHEN** existing WIP Overview code calls `get_wip_matrix(status='HOLD', hold_type='quality')`
+- **THEN** the result SHALL be identical to the pre-extension behavior
+- **THEN** the new `reason` parameter SHALL default to None (no HOLDREASONNAME filtering)

openspec/changes/archive/2026-02-10-hold-lot-overview/specs/hold-overview-page/spec.md

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+## ADDED Requirements
+
+### Requirement: Hold Overview page SHALL display a filter bar with Hold Type and Reason
+The page SHALL provide a filter bar for selecting hold type and hold reason.
+
+#### Scenario: Hold Type radio default
+- **WHEN** the page loads
+- **THEN** the Hold Type filter SHALL default to "品質異常"
+- **THEN** three radio options SHALL display: 品質異常, 非品質異常, 全部
+
+#### Scenario: Hold Type change reloads all data
+- **WHEN** user changes the Hold Type selection
+- **THEN** all four API calls (summary, matrix, treemap, lots) SHALL reload with the new hold_type parameter
+- **THEN** any active matrix and treemap filters SHALL be cleared
+
+#### Scenario: Reason dropdown populated from current data
+- **WHEN** summary data is loaded
+- **THEN** the Reason dropdown SHALL display "全部" plus all distinct hold reasons from the treemap data
+- **THEN** selecting a specific reason SHALL reload all four API calls filtered by that reason
+- **THEN** any active matrix and treemap filters SHALL be cleared
+
+### Requirement: Hold Overview page SHALL display summary KPI cards
+The page SHALL show summary statistics for all hold lots matching the current filter.
+
+#### Scenario: Summary cards rendering
+- **WHEN** summary data is loaded from `GET /api/hold-overview/summary`
+- **THEN** five cards SHALL display: Hold Lots, Hold QTY, 站別數, 平均滯留天數, 最大滯留天數
+- **THEN** lot and QTY values SHALL use zh-TW number formatting
+- **THEN** age values SHALL display with "天" suffix and one decimal place
+
+#### Scenario: Summary reflects filter bar only
+- **WHEN** user clicks a matrix cell or treemap block
+- **THEN** summary cards SHALL NOT change (they only respond to filter bar changes)
+
+### Requirement: Hold Overview page SHALL display a Workcenter x Package matrix
+The page SHALL display a cross-tabulation matrix of workcenters vs packages for hold lots.
+
+#### Scenario: Matrix table rendering
+- **WHEN** matrix data is loaded from `GET /api/hold-overview/matrix`
+- **THEN** the table SHALL display workcenters as rows and packages as columns
+- **THEN** cell values SHALL show QTY with zh-TW number formatting
+- **THEN** the first column (Workcenter) SHALL be sticky on horizontal scroll
+- **THEN** a Total row and Total column SHALL be displayed
+- **THEN** cells with zero value SHALL display "-"
+
+#### Scenario: Matrix cell click filters TreeMap and lot table
+- **WHEN** user clicks a QTY cell in the matrix (intersection of workcenter and package)
+- **THEN** `matrixFilter` SHALL be set to `{ workcenter, package }`
+- **THEN** TreeMap SHALL reload showing only data for that workcenter + package combination
+- **THEN** lot table SHALL reload filtered by that workcenter + package
+- **THEN** the clicked cell SHALL show an active highlight
+
+#### Scenario: Matrix workcenter row click
+- **WHEN** user clicks a workcenter name or its Total cell
+- **THEN** `matrixFilter` SHALL be set to `{ workcenter }` (all packages)
+- **THEN** TreeMap and lot table SHALL reload filtered by that workcenter
+
+#### Scenario: Matrix package column click
+- **WHEN** user clicks a package column header or its Total cell
+- **THEN** `matrixFilter` SHALL be set to `{ package }` (all workcenters)
+- **THEN** TreeMap and lot table SHALL reload filtered by that package
+
+#### Scenario: Matrix click toggle
+- **WHEN** user clicks the same cell/row/column that is already active
+- **THEN** `matrixFilter` SHALL be cleared
+- **THEN** TreeMap and lot table SHALL reload without matrix filter
+
+#### Scenario: Matrix reflects filter bar only
+- **WHEN** user clicks a treemap block
+- **THEN** matrix SHALL NOT change (it only responds to filter bar changes)
+
+### Requirement: Hold Overview page SHALL display active filter indicators
+The page SHALL show a clear indicator of active cascade filters.
+
+#### Scenario: Matrix filter indicator
+- **WHEN** a matrix filter is active
+- **THEN** a filter indicator SHALL display between the matrix and TreeMap sections
+- **THEN** the indicator SHALL show the active workcenter and/or package name
+- **THEN** a clear button (✕) SHALL remove the matrix filter
+
+#### Scenario: TreeMap filter indicator
+- **WHEN** a treemap filter is active
+- **THEN** a filter indicator SHALL display between the TreeMap and lot table sections
+- **THEN** the indicator SHALL show the active workcenter and reason name
+- **THEN** a clear button (✕) SHALL remove the treemap filter
+
+#### Scenario: Clear all filters
+- **WHEN** user clicks a "清除所有篩選" button
+- **THEN** both matrixFilter and treemapFilter SHALL be cleared
+- **THEN** TreeMap and lot table SHALL reload without cascade filters
+
+### Requirement: Hold Overview page SHALL display a TreeMap visualization
+The page SHALL display a TreeMap chart showing hold lot distribution by workcenter and reason.
+
+#### Scenario: TreeMap rendering
+- **WHEN** treemap data is loaded from `GET /api/hold-overview/treemap`
+- **THEN** the TreeMap SHALL display with two levels: Workcenter (parent) → Hold Reason (child)
+- **THEN** block area SHALL represent QTY
+- **THEN** block color SHALL represent average age at current station using a 4-level color scale
+- **THEN** the color scale legend SHALL display: 綠(<1天), 黃(1-3天), 橙(3-7天), 紅(>7天)
+
+#### Scenario: TreeMap tooltip
+- **WHEN** user hovers over a TreeMap block
+- **THEN** a tooltip SHALL display: Workcenter, Reason, Lots count, QTY, and average age
+
+#### Scenario: TreeMap narrows on matrix filter (Option A)
+- **WHEN** a matrix filter is active (e.g., workcenter=WC-MOLD, package=PKG-A)
+- **THEN** the TreeMap SHALL only show data matching the matrix filter
+- **THEN** the TreeMap API SHALL be called with workcenter and/or package parameters
+
+#### Scenario: TreeMap click filters lot table
+- **WHEN** user clicks a leaf block in the TreeMap (a specific reason within a workcenter)
+- **THEN** `treemapFilter` SHALL be set to `{ workcenter, reason }`
+- **THEN** lot table SHALL reload filtered by that workcenter + reason
+- **THEN** the clicked block SHALL show a visual highlight (border or opacity change)
+
+#### Scenario: TreeMap click toggle
+- **WHEN** user clicks the same block that is already active
+- **THEN** `treemapFilter` SHALL be cleared
+- **THEN** lot table SHALL reload without treemap filter
+
+#### Scenario: Empty TreeMap
+- **WHEN** treemap data returns zero items
+- **THEN** the TreeMap area SHALL display "目前無 Hold 資料"
+
+### Requirement: Hold Overview page SHALL display paginated lot details
+The page SHALL display a detailed lot table with server-side pagination.
+
+#### Scenario: Lot table rendering
+- **WHEN** lot data is loaded from `GET /api/hold-overview/lots`
+- **THEN** a table SHALL display with columns: LOTID, WORKORDER, QTY, Package, Workcenter, Hold Reason, Age, Hold By, Dept, Hold Comment
+- **THEN** age values SHALL display with "天" suffix
+
+#### Scenario: Lot table responds to all cascade filters
+- **WHEN** matrixFilter is `{ workcenter: WC-A, package: PKG-1 }` and treemapFilter is `{ reason: 品質確認 }`
+- **THEN** lots API SHALL be called with `workcenter=WC-A&package=PKG-1&treemap_reason=品質確認`
+- **THEN** only lots matching all active filters SHALL be displayed
+
+#### Scenario: Pagination
+- **WHEN** total lots exceeds per_page (50)
+- **THEN** Prev/Next buttons and page info SHALL display
+- **THEN** page info SHALL show "顯示 {start} - {end} / {total}"
+
+#### Scenario: Filter changes reset pagination
+- **WHEN** any filter changes (filter bar, matrix click, or treemap click)
+- **THEN** pagination SHALL reset to page 1
+
+#### Scenario: Empty lot result
+- **WHEN** a query returns zero lots
+- **THEN** the lot table SHALL display a "No data" placeholder
+
+### Requirement: Hold Overview page SHALL auto-refresh and handle request cancellation
+The page SHALL automatically refresh data and prevent stale request pile-up.
+
+#### Scenario: Auto-refresh interval
+- **WHEN** the page is loaded
+- **THEN** data SHALL auto-refresh every 10 minutes using `useAutoRefresh` composable
+- **THEN** auto-refresh SHALL be skipped when the tab is hidden
+
+#### Scenario: Visibility change refresh
+- **WHEN** the tab becomes visible after being hidden
+- **THEN** data SHALL refresh immediately
+
+#### Scenario: Request cancellation
+- **WHEN** a new data load is triggered while a previous request is in-flight
+- **THEN** the previous request SHALL be cancelled via AbortController
+- **THEN** the cancelled request SHALL NOT update the UI
+
+#### Scenario: Manual refresh
+- **WHEN** user clicks the "重新整理" button
+- **THEN** all data SHALL reload and the auto-refresh timer SHALL reset
+- **THEN** all cascade filters (matrixFilter, treemapFilter) SHALL be preserved during refresh
+
+### Requirement: Hold Overview page SHALL handle loading and error states
+The page SHALL display appropriate feedback during API calls and on errors.
+
+#### Scenario: Initial loading overlay
+- **WHEN** the page first loads
+- **THEN** a full-page loading overlay SHALL display until all data is loaded
+
+#### Scenario: API error handling
+- **WHEN** an API call fails
+- **THEN** an error banner SHALL display with the error message
+- **THEN** the page SHALL NOT crash or become unresponsive
+
+#### Scenario: Refresh indicator
+- **WHEN** data is being refreshed (not initial load)
+- **THEN** a spinning refresh indicator SHALL display in the header
+- **THEN** a success checkmark SHALL flash briefly on completion
+
+### Requirement: Hold Overview page SHALL have back navigation
+The page SHALL provide navigation back to WIP Overview.
+
+#### Scenario: Back button
+- **WHEN** user clicks the "← WIP Overview" button in the header
+- **THEN** the page SHALL navigate to `/wip-overview`

openspec/changes/archive/2026-02-10-hold-lot-overview/specs/vue-vite-page-architecture/spec.md

@@ -0,0 +1,40 @@
+## MODIFIED Requirements
+
+### Requirement: Vite config SHALL support Vue SFC and HTML entry points
+The Vite build configuration SHALL support Vue Single File Components alongside existing vanilla JS entries.
+
+#### Scenario: Vue plugin coexistence
+- **WHEN** `vite build` is executed
+- **THEN** Vue SFC (`.vue` files) SHALL be compiled by `@vitejs/plugin-vue`
+- **THEN** existing vanilla JS entry points SHALL continue to build without modification
+
+#### Scenario: HTML entry point
+- **WHEN** a page uses an HTML file as its Vite entry point
+- **THEN** Vite SHALL process the HTML and its referenced JS/CSS into `static/dist/`
+- **THEN** the output SHALL include `<page-name>.html`, `<page-name>.js`, and `<page-name>.css`
+
+#### Scenario: Chunk splitting
+- **WHEN** Vite builds the project
+- **THEN** Vue runtime SHALL be split into a `vendor-vue` chunk
+- **THEN** ECharts modules (including TreemapChart) SHALL be split into the existing `vendor-echarts` chunk
+- **THEN** chunk splitting SHALL NOT affect existing page bundles
+
+#### Scenario: Migrated page entry replacement
+- **WHEN** a vanilla JS page is migrated to Vue 3
+- **THEN** its Vite entry SHALL change from JS file to HTML file (e.g., `src/wip-overview/main.js` → `src/wip-overview/index.html`)
+- **THEN** the original JS entry SHALL be replaced, not kept alongside
+
+#### Scenario: Hold Overview entry point
+- **WHEN** the hold-overview page is added
+- **THEN** `vite.config.js` input SHALL include `'hold-overview': resolve(__dirname, 'src/hold-overview/index.html')`
+- **THEN** the build SHALL produce `hold-overview.html`, `hold-overview.js`, and `hold-overview.css` in `static/dist/`
+
+#### Scenario: Shared CSS import across migrated pages
+- **WHEN** multiple migrated pages import a shared CSS module (e.g., `wip-shared/styles.css`)
+- **THEN** Vite SHALL bundle the shared CSS into each page's output CSS
+- **THEN** shared CSS SHALL NOT create a separate shared chunk that requires additional HTTP requests
+
+#### Scenario: Shared composable import across module boundaries
+- **WHEN** a migrated page imports a composable from another shared module (e.g., `hold-overview` imports `useAutoRefresh` from `wip-shared/`)
+- **THEN** the composable SHALL be bundled into the importing page's JS output
+- **THEN** cross-module imports SHALL NOT create unexpected shared chunks

openspec/changes/archive/2026-02-10-hold-lot-overview/tasks.md

@@ -0,0 +1,72 @@
+## 1. Backend — 擴充現有 Service 函數
+
+- [x] 1.1 擴充 `get_hold_detail_summary()` 簽名：`reason` 改為 `Optional[str] = None`，新增 `hold_type: Optional[str] = None` 參數；reason=None 時聚合所有 HOLD lots；hold_type 過濾品質/非品質；cache path 和 Oracle fallback 都需支援；確保現有 Hold Detail 呼叫 `get_hold_detail_summary(reason='xxx')` 行為不變
+- [x] 1.2 擴充 `get_hold_detail_lots()` 簽名：`reason` 改為 `Optional[str] = None`，新增 `hold_type: Optional[str] = None` 和 `treemap_reason: Optional[str] = None` 參數；reason=None 時返回所有 HOLD lots；treemap_reason 作為額外 HOLDREASONNAME 過濾（TreeMap 點擊篩選用）；增加 holdReason 欄位到 lot 回傳資料中；確保現有 Hold Detail 呼叫不受影響
+- [x] 1.3 擴充 `get_wip_matrix()` 簽名：新增 `reason: Optional[str] = None` 參數，過濾 HOLDREASONNAME；cache path 用 DataFrame filter，Oracle fallback 用 QueryBuilder；reason=None 時行為不變，確保 WIP Overview 呼叫不受影響
+- [x] 1.4 新增 `get_hold_overview_treemap()` 函數（唯一全新函數）：使用 `_select_with_snapshot_indexes(status='HOLD', hold_type=...)` 取得 HOLD DataFrame，按 (WORKCENTER_GROUP, HOLDREASONNAME) groupBy 聚合，回傳 `[{ workcenter, reason, lots, qty, avgAge }]`；接受 `hold_type`, `reason`, `workcenter`, `package` 參數；含 Oracle fallback
+
+## 2. Backend — 路由
+
+- [x] 2.1 建立 `src/mes_dashboard/routes/hold_overview_routes.py`，Flask Blueprint `hold_overview_bp`；頁面路由 `GET /hold-overview` 以 `send_from_directory` 提供 static Vite HTML，含 fallback HTML
+- [x] 2.2 實作 `GET /api/hold-overview/summary`：解析 `hold_type`（預設 `quality`）和 `reason` query params，委派給擴充後的 `get_hold_detail_summary(reason=reason, hold_type=hold_type)`
+- [x] 2.3 實作 `GET /api/hold-overview/matrix`：委派給現有 `get_wip_matrix(status='HOLD', hold_type=..., reason=...)`；套用 rate limiting (120 req/60s)
+- [x] 2.4 實作 `GET /api/hold-overview/treemap`：解析 `hold_type`, `reason`, `workcenter`, `package` params，委派給 `get_hold_overview_treemap()`
+- [x] 2.5 實作 `GET /api/hold-overview/lots`：解析所有 filter params + 分頁，委派給擴充後的 `get_hold_detail_lots(reason=reason, hold_type=hold_type, treemap_reason=treemap_reason, ...)`；套用 rate limiting (90 req/60s)；per_page 上限 200
+- [x] 2.6 在 Flask app factory（`routes/__init__.py`）中註冊 `hold_overview_bp`
+
+## 3. Backend — 向後相容驗證
+
+- [x] 3.1 驗證 Hold Detail 頁面現有 3 支 API（summary/distribution/lots）在擴充後行為不變：`get_hold_detail_summary(reason='xxx')` 和 `get_hold_detail_lots(reason='xxx', ...)` 結果與擴充前一致
+- [x] 3.2 驗證 WIP Overview 的 `get_wip_matrix()` 呼叫在新增 reason 參數後行為不變（reason=None 預設值）
+
+## 4. Frontend — 腳手架
+
+- [x] 4.1 建立 `frontend/src/hold-overview/` 目錄結構：`index.html`, `main.js`, `App.vue`, `style.css`, `components/`
+- [x] 4.2 在 `vite.config.js` 的 input 加入 `'hold-overview': resolve(__dirname, 'src/hold-overview/index.html')`
+- [x] 4.3 建立 `index.html`（Vue 3 mount point）、`main.js`（`createApp(App).mount('#app')`），import `style.css` 和 `wip-shared/styles.css`
+
+## 5. Frontend — FilterBar（全新）
+
+- [x] 5.1 建立 `components/FilterBar.vue`：Hold Type radio group（品質異常 default, 非品質異常, 全部）+ Reason dropdown（全部 + dynamic reasons）；emit `change` 事件帶 `{ holdType, reason }`
+
+## 6. Frontend — SummaryCards（直接 import）
+
+- [x] 6.1 在 App.vue 中直接 `import SummaryCards from '../hold-detail/components/SummaryCards.vue'`；props 形狀 `{ totalLots, totalQty, avgAge, maxAge, workcenterCount }` 完全相容，無需新建元件
+
+## 7. Frontend — HoldMatrix（基於 MatrixTable 新建）
+
+- [x] 7.1 建立 `components/HoldMatrix.vue`，以 `wip-overview/MatrixTable.vue` 為基礎：保留 matrix 渲染邏輯（sticky 首欄、Total row/column、"-" 零值、zh-TW 格式化）
+- [x] 7.2 擴充互動：cell click → emit `{ workcenter, package }`、workcenter name/row total click → emit `{ workcenter }`、package header/column total click → emit `{ package }`；active cell/row/column highlight；toggle logic（再次點擊同一項 = 清除）
+
+## 8. Frontend — HoldTreeMap（全新）
+
+- [x] 8.1 建立 `components/HoldTreeMap.vue`：ECharts TreeMap，`import { TreemapChart } from 'echarts/charts'`；兩層結構（WC parent → Reason child）；面積=QTY；`visualMap` 色階 for avgAge（綠<1天, 黃1-3天, 橙3-7天, 紅>7天）
+- [x] 8.2 實作 tooltip（workcenter, reason, lots, qty, avgAge）和 click handler → emit `{ workcenter, reason }`；toggle logic；"目前無 Hold 資料" empty state
+- [x] 8.3 實作 `autoresize` 和 responsive height
+
+## 9. Frontend — LotTable（基於 hold-detail/LotTable 新建）
+
+- [x] 9.1 建立 `components/LotTable.vue`，以 `hold-detail/LotTable.vue` 為基礎：保留分頁邏輯（已 import `wip-shared/Pagination.vue`）、loading/error/empty 狀態、filter indicator；替換欄位：移除 Spec，新增 Hold Reason 欄位（holdReason）
+
+## 10. Frontend — FilterIndicator（全新）
+
+- [x] 10.1 建立 `components/FilterIndicator.vue`：顯示 active matrixFilter 和/或 treemapFilter 標籤，含 ✕ 清除按鈕；任一 cascade filter 啟用時顯示「清除所有篩選」按鈕
+
+## 11. Frontend — App.vue 整合
+
+- [x] 11.1 串接 App.vue：import 所有元件（SummaryCards 從 hold-detail import、其餘從 local components）；設定 reactive state for `filterBar`, `matrixFilter`, `treemapFilter`, `page`
+- [x] 11.2 實作資料載入：`loadAllData()` 平行呼叫 4 支 API；`loadTreemapAndLots()` for matrix filter 變更；`loadLots()` for treemap filter 變更；使用 `useAutoRefresh` composable（從 `wip-shared/composables/useAutoRefresh.js` import）
+- [x] 11.3 實作 filter cascade：filter bar 變更 → 清除 matrixFilter + treemapFilter → `loadAllData()`；matrix click → set matrixFilter, 清除 treemapFilter → `loadTreemapAndLots()`；treemap click → set treemapFilter → `loadLots()`
+- [x] 11.4 實作 loading states（initialLoading overlay、refreshing indicator、refresh success/error）、error handling、手動重新整理按鈕、AbortController request cancellation
+- [x] 11.5 從 treemap 資料的 distinct reasons 填充 Reason dropdown
+
+## 12. Frontend — 樣式
+
+- [x] 12.1 建立 `style.css`，沿用 `wip-overview/style.css` 和 `hold-detail/style.css` 的 pattern；包含 header、summary cards、matrix table、treemap section、lot table、filter indicator、filter bar、loading overlay、error banner 樣式
+
+## 13. Build & 驗證
+
+- [x] 13.1 執行 `npm --prefix frontend run build`，確認 `static/dist/` 生成 `hold-overview.html`, `hold-overview.js`, `hold-overview.css`
+- [x] 13.2 驗證 Flask serve `/hold-overview` 正常，4 支 API endpoint 回應正確
+- [x] 13.3 端對端測試：filter bar toggle → matrix click → treemap click → lot table cascade；驗證每層正確回應
+- [x] 13.4 回歸測試：確認 Hold Detail 頁面（`/hold-detail?reason=xxx`）功能正常不受影響；確認 WIP Overview Matrix 功能正常不受影響