Implement phased modernization infrastructure for transitioning from multi-page legacy routing to SPA portal-shell architecture, plus post-delivery hardening fixes for policy loading, fallback consistency, and governance drift detection. Key changes: - Add route contract enrichment with scope/visibility/compatibility policies - Canonical 302 redirects from legacy direct-entry to /portal-shell/ routes - Asset readiness enforcement and runtime fallback retirement for in-scope routes - Shared feature-flag helpers (env > config > default) replacing duplicated _to_bool - Defensive copy for lru_cached policy payloads preventing mutation corruption - Unified retired-fallback response helper across app and blueprint routes - Frontend/backend route-contract cross-validation in governance gates - Shell CSS token fallback values for routes rendered outside shell scope - Local-safe .env.example defaults with production recommendation comments - Legacy contract fallback warning logging and single-hop redirect optimization Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
5.5 KiB
Purpose
Define stable requirements for full-vite-page-modularization.
Requirements
Requirement: Major Pages SHALL be Managed by Vite Modules
The system SHALL provide Vite-managed module entries for all in-scope modernization routes under shell-first governance, including admin surfaces /admin/pages and /admin/performance as governed targets. Deferred routes (/tables, /excel-query, /query-tool, /mid-section-defect) are excluded from this phase's required module-governance completeness.
Scenario: In-scope module governance completeness
- WHEN modernization route coverage is validated for this phase
- THEN every in-scope route SHALL have deterministic module-governance metadata and ownership mapping
Scenario: Deferred route exclusion in this phase
- WHEN completeness validation executes for this phase
- THEN deferred routes SHALL be excluded from mandatory pass criteria
Requirement: Build Pipeline SHALL Produce Backend-Served Assets
Vite build output for in-scope modernization routes MUST be emitted into backend static paths and validated at release time. Missing required in-scope assets SHALL fail release gates instead of relying on runtime fallback behavior.
Scenario: Build artifact readiness for in-scope routes
- WHEN frontend build is executed for release
- THEN required in-scope route artifacts SHALL be present in configured backend static dist paths
- THEN missing required artifacts SHALL fail readiness checks
Scenario: Deferred route fallback posture unchanged in this phase
- WHEN deferred routes are evaluated in this phase
- THEN existing fallback posture SHALL not block this phase's completion
Requirement: Vite Page Modules SHALL Reuse Shared Chart and Query Building Blocks
Page entry modules MUST consume shared chart/query/drawer utilities for common behaviors.
Scenario: Common chart behavior across pages
- WHEN multiple report pages render equivalent chart interactions
- THEN the behavior MUST be provided by shared Vite modules rather than duplicated page-local implementations
Requirement: Modularization MUST Preserve Established Navigation and Drill-Down Semantics
Refactoring into Vite modules and SPA shell routing SHALL not alter existing route paths, query semantics, and drill-down entry points.
Scenario: User follows existing drill-down path
- WHEN the user navigates from summary page to detail views
- THEN the resulting flow and parameter semantics MUST match the established baseline behavior
Scenario: Direct detail route remains valid
- WHEN users open existing detail routes directly with query parameters (e.g.,
/wip-detail?workcenter=...,/hold-detail?reason=...) - THEN route-level behavior MUST remain compatible with established baseline expectations
Requirement: Module Boundaries SHALL Support Frontend Compute Expansion
Vite module structure MUST keep compute logic decoupled from DOM wiring so additional backend-to-frontend computation shifts can be added safely.
Scenario: Adding a new frontend-computed metric
- WHEN a new metric is migrated from backend to frontend
- THEN the metric logic MUST be integrated through shared compute modules without rewriting page routing structure
Requirement: WIP Report Pages SHALL Be Served by Vite Modules
The system SHALL provide Vite entry bundles for WIP overview and WIP detail pages, with template-level asset resolution.
Scenario: WIP module asset available
- WHEN the built asset exists in backend static dist
- THEN the page MUST load behavior from the corresponding Vite module entry
Scenario: WIP module asset unavailable
- WHEN the built asset is not present
- THEN the page MUST retain equivalent behavior through explicit inline fallback logic
Requirement: Vite Modules MUST Preserve Legacy Handler Compatibility
Vite report modules SHALL expose required global handlers for existing inline entry points until event wiring is fully migrated.
Scenario: Inline-triggered handler compatibility
- WHEN a template control invokes existing global handler names
- THEN the migrated module MUST provide compatible callable handlers without runtime scope errors
Requirement: Hold Detail Page SHALL Be Served by a Vite Module
The system SHALL provide a dedicated Vite entry bundle for the hold-detail report page.
Scenario: Hold-detail module asset exists
- WHEN
/hold-detailis rendered andhold-detail.jsexists in static dist - THEN the page MUST load behavior from the Vite module entry
Scenario: Hold-detail module asset missing
- WHEN
/hold-detailis rendered and the module asset is unavailable - THEN the page MUST remain operational through explicit inline fallback logic
Requirement: WIP Modules SHALL Reuse Shared Autocomplete and Filter Query Utilities
WIP overview and WIP detail Vite entry modules SHALL use shared frontend core utilities for autocomplete request construction and cross-filter behavior.
Scenario: Cross-filter autocomplete parity across WIP pages
- WHEN users type in workorder/lot/package/type filters on either WIP overview or WIP detail pages
- THEN both pages MUST generate equivalent autocomplete request parameters and return behaviorally consistent dropdown results
Scenario: Shared utility change propagates across both pages
- WHEN autocomplete mapping rules are updated in the shared core module
- THEN both WIP overview and WIP detail modules MUST consume the updated behavior without duplicated page-local logic edits