Switch exercise DB to gfauredev fork, add immutable defaults with Clone & Edit, periodic refresh, and Wake Lock

[Copilot]

Addresses several improvements to the exercise database and app behavior: switch data source to the gfauredev fork, make DB exercises read-only via clone-based editing, auto-refresh stale data, and prevent the device from sleeping during workouts.

Exercise DB URL — Single Source of Truth

• Added EXERCISE_DB_BASE_URL in utils.rs as the sole constant pointing to https://raw.githubusercontent.com/gfauredev/free-exercise-db/main/
• Both the JSON catalog URL (dist/exercises.json) and image base path (exercises/) are derived from it — no more two places to update on fork changes

Immutable Default Exercises

• ExerciseCard gains an is_custom: bool prop
• DB exercises show "✏️ Clone & Edit" instead of "✏️ Edit": clones the exercise with a fresh custom_{timestamp} ID, persists it, and navigates directly to its edit form
• ExerciseListPage tracks (Exercise, is_custom) pairs and passes the flag down

Periodic Exercise Refresh

• On launch, if exercises are cached in IndexedDB but exercise_db_last_fetch (localStorage) is older than 7 days, cached data is served immediately and a background re-download is triggered
• record_fetch_timestamp() writes the Unix timestamp after each successful download

Wake Lock — Inhibit Idle

New services/wake_lock.rs requests navigator.wakeLock.request("screen") via js_sys::Reflect (no new web-sys WakeLock feature flags needed). Re-acquires on visibilitychange to survive tab switches. Progressive enhancement — silently no-ops on unsupported browsers.

// main()
services::wake_lock::enable_wake_lock();

---

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[github-actions]

🧪 Unit Tests & Coverage

Test Results

info: cargo-llvm-cov currently setting cfg(coverage); you can opt-out it by passing --no-cfg-coverage
�[1m�[92m    Updating�[0m crates.io index
�[1m�[92m   Compiling�[0m log-workout v0.1.0 (/home/runner/work/LogOut/LogOut)
�[1m�[92m    Finished�[0m `test` profile [unoptimized + debuginfo] target(s) in 21.37s
�[1m�[92m     Running�[0m unittests src/main.rs (target/llvm-cov-target/debug/deps/log_workout-400ed1bd472c7a92)

running 98 tests
test models::tests::all_categories_serde_round_trip ... ok
test models::tests::all_equipment_serde_round_trip ... ok
test models::tests::all_forces_serde_round_trip ... ok
test models::tests::category_all_contains_every_variant ... ok
test models::tests::category_round_trip ... ok
test models::tests::category_display_all_variants ... ok
test models::tests::distance_display_fractional_km ... ok
test models::tests::all_muscles_serde_round_trip ... ok
test models::tests::distance_display_metres ... ok
test models::tests::distance_display_whole_km ... ok
test models::tests::equipment_all_contains_every_variant ... ok
test models::tests::equipment_display_all_variants ... ok
test models::tests::equipment_round_trip ... ok
test models::tests::exercise_backward_compat_missing_optional_fields ... ok
test models::tests::exercise_full_json_deserialization ... ok
test models::tests::exercise_get_first_image_url_none ... ok
test models::tests::exercise_get_first_image_url_some ... ok
test models::tests::exercise_get_image_url_by_index ... ok
test models::tests::exercise_get_image_url_full_url_passthrough ... ok
test models::tests::exercise_level_none_when_missing_from_json ... ok
test models::tests::exercise_level_some_when_present_in_json ... ok
test models::tests::exercise_log_duration_seconds ... ok
test models::tests::exercise_log_duration_saturates_on_underflow ... ok
test models::tests::exercise_log_duration_seconds_none_when_incomplete ... ok
test models::tests::exercise_log_force_none_is_omitted_in_json ... ok
test models::tests::exercise_log_is_complete ... ok
test models::tests::exercise_log_serde_round_trip_with_all_fields ... ok
test models::tests::find_active_session_returns_first_without_end_time ... ok
test models::tests::exercise_optional_fields_none ... ok
test models::tests::exercise_minimal ... ok
test models::tests::find_active_session_returns_none_for_empty_list ... ok
test models::tests::find_active_session_returns_none_when_all_finished ... ok
test models::tests::finish_session_cancelled_session_is_not_stored ... ok
test models::tests::finish_session_with_exercises_is_stored ... ok
test models::tests::force_all_contains_every_variant ... ok
test models::tests::force_display_all_variants ... ok
test models::tests::force_has_reps ... ok
test models::tests::format_time_boundary_values ... ok
test models::tests::format_time_hours ... ok
test models::tests::format_time_minutes_seconds ... ok
test models::tests::get_current_timestamp_returns_reasonable_value ... ok
test models::tests::level_display_all_variants ... ok
test models::tests::level_serde_round_trip ... ok
test models::tests::mechanic_display_all_variants ... ok
test models::tests::mechanic_serde_round_trip ... ok
test models::tests::muscle_all_contains_every_variant ... ok
test models::tests::muscle_display_all_variants ... ok
test models::tests::muscle_round_trip ... ok
test models::tests::parse_distance_km_invalid ... ok
test models::tests::parse_distance_km_large_value_clamped ... ok
test models::tests::parse_distance_km_nan_and_infinity ... ok
test models::tests::parse_distance_km_valid ... ok
test models::tests::parse_weight_kg_invalid ... ok
test models::tests::parse_weight_kg_large_value_clamped ... ok
test models::tests::parse_weight_kg_nan_and_infinity ... ok
test models::tests::parse_weight_kg_valid ... ok
test models::tests::session_with_only_pending_exercises_is_cancelled ... ok
test models::tests::weight_display_fractional_kg ... ok
test models::tests::user_exercise_serialization_with_all_fields ... ok
test models::tests::weight_display_whole_kg ... ok
test models::tests::workout_exercise_serde_round_trip ... ok
test models::tests::workout_serde_round_trip ... ok
test models::tests::weight_display_zero ... ok
test models::tests::workout_session_is_active ... ok
test models::tests::workout_session_backward_compat_missing_pending_ids ... ok
test models::tests::workout_session_is_cancelled_when_no_exercises ... ok
test models::tests::workout_session_is_not_cancelled_when_has_exercises ... ok
test models::tests::workout_session_new_has_empty_pending_ids ... ok
test models::tests::workout_session_new_has_no_end_time ... ok
test models::tests::workout_session_pending_ids_serialization_round_trip ... ok
test models::tests::workout_set_serde_round_trip ... ok
test models::tests::workout_session_with_exercise_logs_serde ... ok
test models::tests::workout_set_without_optionals ... ok
test services::exercise_db::tests::exercises_json_url_uses_fork ... ok
test services::exercise_db::tests::get_equipment_types_deduplicates ... ok
test services::exercise_db::tests::get_exercise_by_id_found ... ok
test services::exercise_db::tests::get_exercise_by_id_not_found ... ok
test services::exercise_db::tests::get_muscle_groups_deduplicates ... ok
test services::exercise_db::tests::search_by_category ... ok
test services::exercise_db::tests::search_by_force ... ok
test services::exercise_db::tests::search_by_equipment ... ok
test services::exercise_db::tests::search_by_level ... ok
test services::exercise_db::tests::search_by_muscle ... ok
test services::exercise_db::tests::search_by_name ... ok
test services::exercise_db::tests::search_by_secondary_muscle_biceps ... ok
test services::exercise_db::tests::search_by_secondary_muscle ... ok
test services::exercise_db::tests::search_empty_query_returns_all ... ok
test services::exercise_db::tests::search_case_insensitive ... ok
test services::exercise_db::tests::search_no_match ... ok
test services::exercise_db::tests::search_with_none_equipment_does_not_match_equipment_query ... ok
test services::exercise_db::tests::search_with_none_force_does_not_match_force_query ... ok
test services::service_worker::tests::register_service_worker_noop_on_native ... ok
test services::wake_lock::tests::enable_wake_lock_noop_on_native ... ok
test utils::tests::format_session_date_beginning_of_today ... ok
test utils::tests::format_session_date_days_ago ... ok
test utils::tests::format_session_date_end_of_yesterday ... ok
test utils::tests::format_session_date_today ... ok
test utils::tests::format_session_date_yesterday ... ok

test result: ok. 98 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s


    Finished report saved to lcov.info

Coverage Summary

Filename                                 Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
components/active_session.rs                 364               364     0.00%          32                32     0.00%         180               180     0.00%           0                 0         -
components/add_custom_exercise.rs             30                30     0.00%           3                 3     0.00%          24                24     0.00%           0                 0         -
components/analytics.rs                        1                 1     0.00%           1                 1     0.00%           1                 1     0.00%           0                 0         -
components/analytics_panel.rs                182               182     0.00%          32                32     0.00%         111               111     0.00%           0                 0         -
components/bottom_nav.rs                       1                 1     0.00%           1                 1     0.00%           1                 1     0.00%           0                 0         -
components/completed_exercise_log.rs          92                92     0.00%          13                13     0.00%          47                47     0.00%           0                 0         -
components/credits.rs                          1                 1     0.00%           1                 1     0.00%           1                 1     0.00%           0                 0         -
components/edit_custom_exercise.rs            47                47     0.00%          12                12     0.00%          32                32     0.00%           0                 0         -
components/exercise_card.rs                   44                44     0.00%           4                 4     0.00%          31                31     0.00%           0                 0         -
components/exercise_form_fields.rs           190               190     0.00%          24                24     0.00%         104               104     0.00%           0                 0         -
components/exercise_list.rs                   64                64     0.00%           3                 3     0.00%          27                27     0.00%           0                 0         -
components/home.rs                            62                62     0.00%          16                16     0.00%          39                39     0.00%           0                 0         -
components/workout_log.rs                     96                96     0.00%          14                14     0.00%          60                60     0.00%           0                 0         -
main.rs                                       11                11     0.00%           3                 3     0.00%           8                 8     0.00%           0                 0         -
models/mod.rs                               1389                 2    99.86%          98                 1    98.98%         886                 1    99.89%           0                 0         -
services/exercise_db.rs                      357                19    94.68%          39                 6    84.62%         214                15    92.99%           0                 0         -
services/service_worker.rs                     6                 0   100.00%           2                 0   100.00%           6                 0   100.00%           0                 0         -
services/storage.rs                          116               116     0.00%          22                22     0.00%          73                73     0.00%           0                 0         -
services/wake_lock.rs                          5                 0   100.00%           2                 0   100.00%           5                 0   100.00%           0                 0         -
utils.rs                                      62                 0   100.00%           8                 0   100.00%          43                 0   100.00%           0                 0         -
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                       3120              1322    57.63%         330               188    43.03%        1893               755    60.12%           0                 0         -

Coverage Gate ✅ PASSED — all tested files have ≥ 90% coverage

File	Lines Hit/Total	Coverage	Status
src/models/mod.rs	885/886	99%	✅
src/services/exercise_db.rs	199/214	92%	✅
src/services/service_worker.rs	6/6	100%	✅
src/services/wake_lock.rs	5/5	100%	✅
src/utils.rs	43/43	100%	✅

[github-actions]

🚀 PageSpeed Insights (Lighthouse)

Category	Score
⚡ Performance	🟡 63
♿ Accessibility	🟡 79
🛡️ Best Practices	🟢 96
🔍 SEO	🟢 91
📱 PWA	🔴 0

🟢 ≥ 90 · 🟡 50–89 · 🔴 < 50

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