Improve test coverage in low-coverage controllers, notifications, and JavaScript

[compwron]

Summary

An audit of test coverage identified several areas with significantly lower coverage than the project average (~91% Ruby line coverage). Every Ruby app file has a corresponding spec file, so the gaps are about depth of coverage, not missing files entirely.

Ruby Coverage Gaps

Controllers (target: match project average of 91%+)

File	Current Coverage
app/controllers/learning_hour_topics_controller.rb	41.7%
app/controllers/learning_hour_types_controller.rb	41.7%
app/controllers/mileage_reports_controller.rb	44.4%
app/controllers/followup_reports_controller.rb	50.0%

Notifications

File	Current Coverage
app/notifications/delivery_methods/sms.rb	43.8%

Policies

File	Current Coverage
app/policies/custom_org_link_policy.rb	50.0%

JavaScript Coverage Gaps (46.75% overall)

File	Line Coverage
app/javascript/src/case_emancipation.js	17.3%
app/javascript/src/case_contact.js	20%
app/javascript/src/casa_case.js	21%
app/javascript/src/dashboard.js	22.7%
app/javascript/src/session_timeout_poller.js	43.8%
app/javascript/src/require_communication_preference.js	50%

There are also 2 failing Jest tests in validated_form.test.js (color format mismatch: rgb() vs hex).

Suggested approach

• Controllers: Add request specs or system tests covering untested actions (per ADR 0006, system tests are preferred)
• Notifications/Policies: Add unit specs for uncovered branches
• JavaScript: Add Jest tests for the 4 files under 25% coverage as the highest-value targets
• Jest failures: Fix the 2 failing assertions in validated_form.test.js

How to reproduce

# Ruby coverage report
RUN_SIMPLECOV=true bundle exec rspec
open coverage/index.html

# JavaScript coverage
npx jest --coverage

# Check for missing spec files
bundle exec rake test_checker

Notes

• lib/tasks directory is at 49.7% but most of those are one-time deployment rake tasks — lower priority
• Coverage data is from the last SimpleCov run; re-run to get current numbers

[stefannibrasil]

Learning Hour Topics and Learning Hour Types controllers are being covered extensively inhttps://github.com//pull/6841

[stefannibrasil]

Followups and Mileage reports have coverage added in #6842