# Implementation Plan: Spec 334 - Nested Filament / Livewire Context Contract Hardening

- Branch: `334-nested-filament-context-contract-hardening`
- Date: 2026-05-24
- Spec: `specs/334-nested-filament-context-contract-hardening/spec.md`
- Input: User-provided Spec 334 draft + repo inspection for path truth.

## Summary

Define and enforce a nested Filament/Livewire context contract so operator-critical nested surfaces do not depend on ambient `Filament::getTenant()` during modal, wizard, relation manager, widget, and Livewire update lifecycles.

Implement a narrow hardening slice across four confirmed surfaces, plus guard tests:

- `apps/platform/app/Livewire/BackupSetPolicyPickerTable.php`
- `apps/platform/app/Filament/Resources/RestoreRunResource.php` (+ `apps/platform/app/Filament/Concerns/ResolvesPanelTenantContext.php` seam)
- `apps/platform/app/Filament/Resources/BackupScheduleResource/RelationManagers/BackupScheduleOperationRunsRelationManager.php`
- `apps/platform/app/Filament/Widgets/ManagedEnvironment/ManagedEnvironmentTriageArrivalContinuity.php`
- new architecture guard: `apps/platform/tests/Architecture/FilamentTenantContextContractTest.php`

## Technical Context

- Language/Version: PHP 8.4.15, Laravel 12.52.x.
- Primary Dependencies: Filament 5.2.x, Livewire 4.1.x, Pest 4.x, Tailwind CSS 4.x.
- Storage: PostgreSQL; no schema change expected.
- Testing: Pest Feature + Livewire component tests + one architecture guard; browser smoke only for the two user-visible regression scenarios.
- Validation Lanes: confidence + browser (scoped).
- Target Platform: Laravel Sail locally; Dokploy/container deployment posture unchanged.
- Project Type: Laravel monolith under `apps/platform`.
- Performance Goals: DB-only context recovery; no Graph calls during UI render; no broad unscoped queries in nested surfaces.
- Constraints: No new persisted truth, migrations, packages, env vars, queue/scheduler changes, or routing architecture changes.
**Scale/Scope**: Four confirmed nested surfaces + shared seam hardening + guard tests.

## UI / Surface Guardrail Plan

- **Guardrail scope**: changed existing operator-facing nested surfaces (modal, wizard, relation manager, widget).
- **Affected routes/pages/actions/states/navigation/panel/provider surfaces**:
  - Backup Set “Add policies” modal table (Livewire component).
  - Restore Run Create wizard (resource create page).
  - Backup Schedule Operation Runs relation manager table (nested resource detail).
  - Environment dashboard triage widget (nested widget).
- **No-impact class**: N/A.
- **Native vs custom classification summary**: native Filament + Livewire surfaces; no custom UI framework.
- **Shared-family relevance**: environment context resolution, authorization/visibility gating, table selection semantics, wizard option closures, remembered context validation.
- **State layers in scope**: route-owned workspace/environment, Livewire component state (captured at mount), remembered environment context (validated only), ambient Filament tenant (fallback convenience only).
- **Audience modes in scope**: operator-MSP / platform operators. No customer/read-only surface changes expected.
- **Decision/diagnostic/raw hierarchy plan**: fail-closed states must be honest; do not show “no records” when context is invalid; no raw debug “framework state” troubleshooting exposed to operators.
- **Handling modes**: review-mandatory. This is a correctness hardening slice affecting authorization and scope.
- **Special surface test profiles**: `exception-coded-surface` (context recovery) + `shared-detail-family` (nested relation manager) + browser smoke for two user-visible regressions.
- **Required tests or manual smoke**:
  - Feature/Livewire tests for each confirmed surface and its fail-closed behavior.
  - Architecture guard preventing unsafe `Filament::setTenant(...)` usage in nested surfaces.
  - Browser smoke for:
    - Backup Set “Add policies” checkbox visibility + selection.
    - Restore Run Create wizard no-crash on Livewire update transitions.
- **Exception path and spread control**: no broad fallback that sets tenant from arbitrary model IDs. Any referer-based recovery must validate workspace membership and environment entitlement.
- **UI/Productization coverage decision**: no new routes/pages; cover via tests + browser smoke + PR close-out note.

## Shared Pattern & System Fit

- **Cross-cutting feature marker**: yes (multiple nested surfaces).
- **Systems touched**:
  - Filament tenant resolution seam: `apps/platform/app/Filament/Concerns/ResolvesPanelTenantContext.php`
  - Route/shell context: `apps/platform/app/Support/OperateHub/OperateHubShell.php`
  - Workspace/environment context + remembered context: `apps/platform/app/Support/Workspaces/WorkspaceContext.php`
  - UI gating: `apps/platform/app/Support/Rbac/UiEnforcement.php`
- **Shared abstractions reused**: prefer existing helpers/policies over new framework layers.
- **New abstraction introduced?**: none by default. A small helper class may be introduced only if at least two confirmed surfaces would otherwise duplicate validated context recovery logic (ABSTR-001).
- **Bounded deviation / spread control**: any new helper must be feature-local in scope and must not become a generic “ambient context fixer” without explicit follow-up spec approval.

## OperationRun UX Impact

N/A. This feature does not introduce new queued operations. It must not create new OperationRun types or change OperationRun UX policy.

## Provider Boundary / Platform Core Check

Platform-core hardening only. No Graph contract, provider registry, or provider vocabulary changes.

## Implementation Approach

### Phase 1 — Repo truth + reproduce

- Inspect current behavior and confirm the concrete failure path(s) for:
  - Add Policies modal selection checkbox hidden.
  - Restore Run Create wizard crash during Livewire update.
- Document the exact call path(s) and which closures/methods access context.

### Phase 2 — Define nested context resolution order

Implement (or codify within existing seams) a deterministic resolution order for managed-environment context in nested surfaces:

1. **Owner/domain record** (owner record, component-bound record, backup set record, schedule record, widget record).
2. **Validated component state captured at mount** (e.g., environment ID saved in the Livewire component state).
3. **Route-owned workspace/environment** (when route params are available).
4. **Remembered environment** only if workspace membership and entitlement validate.
5. **Ambient Filament tenant** as fallback convenience only.
6. **Fail closed** with a clear, honest UI state.

Prohibited:

- blindly trusting referer as authority
- unguarded `Filament::setTenant($model->...)` derived from an arbitrary identifier
- broad “set tenant from model id” fallback in the shared seam

### Phase 3 — Apply the contract to confirmed surfaces

- **BackupSetPolicyPickerTable**:
  - Resolve context from the BackupSet (validated) and scope policy query accordingly.
  - Ensure mutation-time recheck before attaching policy IDs.
  - Do not override a mismatched existing tenant; fail closed.
- **RestoreRunResource**:
  - Ensure option closures used in wizard lifecycles can resolve environment context without route params.
  - Implement validated Livewire update context recovery via the shared seam (`apps/platform/app/Support/OperateHub/OperateHubShell.php`) by treating the `Referer` path as a candidate (never authority) and re-validating workspace + membership + operability before using it.
- **BackupScheduleOperationRunsRelationManager**:
  - Use owner schedule context (`$this->getOwnerRecord()`) as primary context.
  - Avoid ambient `ManagedEnvironment::currentOrFail()`-style assumptions when owner exists.
- **ManagedEnvironmentTriageArrivalContinuity**:
  - Prefer widget record context; ambient tenant only fallback.
  - Use the same resolver for visibility and mutation-time checks.

### Phase 4 — Guardrails

- Add `apps/platform/tests/Architecture/FilamentTenantContextContractTest.php` to:
  - detect unsafe `Filament::setTenant(...)` patterns in nested surfaces
  - keep an explicit allowlist for infrastructure-only locations
  - optionally classify (not fail) direct `Filament::getTenant()` usage in known high-risk directories first, to avoid noisy failures

### Phase 5 — Tests and validation

Add focused tests (Feature/Livewire) for:

- tenantless Add Policies picker: authorized user still sees checkboxes and can select items
- restore create wizard: does not throw when route params are missing in Livewire update lifecycle
- owner-scoped relation manager: query does not broaden when ambient tenant is null/wrong
- widget context: record context is preferred; missing context fails closed

Validation commands (narrow first):

- `cd apps/platform && ./vendor/bin/sail artisan test tests/Feature/Filament --filter='BackupSetPolicyPicker|RestoreRun|BackupScheduleOperationRuns|Triage' --compact`
- `cd apps/platform && ./vendor/bin/sail artisan test tests/Architecture --filter='FilamentTenantContextContract' --compact`

Browser smoke (only when feature tests pass):

- `cd apps/platform && php vendor/bin/pest tests/Browser/Spec334NestedFilamentContextContractSmokeTest.php --compact`

## Deployment / Ops Impact

- **Migrations**: none expected.
- **Env vars**: none expected.
- **Queues/scheduler**: none expected.
- **Filament assets**: no new registered assets expected; deployment posture unchanged.