Muesli: PR 10.3 - Performance read only endpoints

[fosterfarrell9]

This PR implements Step 10.3 (read-only UI + proposal generation) for Student Performance. It adds read-only endpoints and views for performance records (index/show), active rule and evaluator views (bulk proposals, single proposal, rule-threshold preview). It integrates Performance/Rules into the Assessments overview tab structure behind the student_performance feature flag. It also extends the playground rake setup with student-performance seed helpers so realistic records/rules/proposals data can be generated quickly.

[Copilot]

Pull request overview

Implements Student Performance Step 10.3 by adding feature-flagged, read-only teacher/editor UI and endpoints for computed performance records, rule display, and eligibility proposal generation, integrated into the lecture-level Assessments overview via subtabs.

Changes:

• Add student_performance routes + controllers for Records (index/show + recompute), Rules (show), and Evaluator (bulk/single proposals + rule-change preview).
• Add new ERB views + a ViewComponent + Stimulus polling controller to render records, rule display, and proposal previews.
• Extend playground rake tasks and architecture docs to support and describe the new performance feature set.

Reviewed changes

Copilot reviewed 39 out of 39 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
spec/requests/student_performance/rules_spec.rb	Request coverage for rules read-only page
spec/requests/student_performance/records_spec.rb	Request coverage for records + recompute endpoints
spec/requests/student_performance/evaluator_spec.rb	Request coverage for proposal/preview endpoints
spec/components/student_performance/participation_status_badge_component_spec.rb	Component coverage for status badge rendering
spec/components/assessments_overview_component_spec.rb	Component coverage for Assessments subtabs
lib/tasks/playground.rake	Include performance tasks in playground setup/reset
lib/tasks/performance_playground.rake	Add compute/reset helpers for performance playground data
lib/tasks/exam_playground.rake	Adjust playground exam date behavior
lib/tasks/assessment_playground.rake	Expand/adjust assessment playground data generation
config/routes.rb	Add feature-flagged student_performance routes under lectures
config/locales/student_performance/en.yml	Add EN strings for performance UI
config/locales/student_performance/de.yml	Add DE strings for performance UI
config/locales/assessment/en.yml	Add EN labels for subtabs
config/locales/assessment/de.yml	Add DE labels for subtabs
architecture/src/features/implementation-prs.md	Update PR plan docs for 10.3/10.4 scope
architecture/src/features/12-views.md	Update views documentation for new subtabs
architecture/src/features/11-controllers.md	Document RulesController (show/edit/update roadmap)
architecture/src/features/05-student-performance.md	Update primary navigation location to Assessments subtabs
architecture/src/features/04-assessments-and-grading.md	Document Assessments overview subtab structure
app/models/student_performance/record.rb	Add staleness helper for computed records
app/models/assessment/participation.rb	Add UI-friendly participation display status helper
app/models/assessment/assessment.rb	Add compact short_title for column headers
app/frontend/student_performance/rules/show.html.erb	Rules read-only UI (active rule + achievements)
app/frontend/student_performance/records/show.html.erb	Record details UI incl. breakdown + recompute
app/frontend/student_performance/records/recompute_poll.controller.js	Poll recompute status and reload Turbo frame
app/frontend/student_performance/records/index.html.erb	Records index UI with filters, table, polling indicator
app/frontend/student_performance/evaluator/single_proposal.html.erb	Single-student proposal preview UI
app/frontend/student_performance/evaluator/preview_rule_change.html.erb	Rule-change preview UI (diff of affected students)
app/frontend/student_performance/evaluator/bulk_proposals.html.erb	Bulk proposals UI + summary stats
app/frontend/student_performance/components/participation_status_badge_component.rb	Badge component for participation status
app/frontend/student_performance/components/participation_status_badge_component.html.erb	Badge component template
app/frontend/entrypoints/initHotwire.js	Register recompute polling Stimulus controller
app/frontend/assessment/assessments/index.html.erb	Render new Assessments overview component
app/frontend/assessment/assessments/components/assessments_overview_component.rb	Tab resolution + feature-flag gating
app/frontend/assessment/assessments/components/assessments_overview_component.html.erb	Tab UI + lazy-loaded Turbo frames
app/controllers/student_performance/rules_controller.rb	Rules show endpoint + auth/locale handling
app/controllers/student_performance/records_controller.rb	Records index/show + recompute + status endpoint
app/controllers/student_performance/evaluator_controller.rb	Proposal generation + preview endpoints
app/controllers/assessment/assessments_controller.rb	Wire tab param into overview rendering