feat(downloads): download completed Xtream catch-up programmes as TS (#1572)

* feat(epg): copy catch-up programme URLs without changing playback

* feat(downloads): save completed Xtream archive programmes as TS

* fix(epg): let newer archive copy requests supersede pending work

* fix(downloads): protect archive partials and independent submissions

* fix(downloads): verify archive identity through finalization

* fix(downloads): bound archive storage and capture cleanup entries

* fix(downloads): preserve archive ownership across failure paths

* fix(downloads): recover explicitly verified archive completions

* fix(downloads): journal archive promotion before publishing files

* fix(downloads): reset archive proof before an explicit restart

* fix(downloads): preserve archive recovery ownership and interruption

* fix(downloads): verify durable archive identity at resume open

* fix(downloads): fence archive commands during completion commit

* fix(downloads): persist archive ownership throughout its lifecycle

* fix(downloads): protect archive removal and missing-file recovery

* fix(downloads): journal private cleanup captures for recovery

* fix(downloads): journal active archive cleanup before removal

* fix(downloads): clean settled archives before deleting stale rows

* fix(downloads): preserve archive ownership on removal and resubmission

* fix(downloads): recover proven archive completions before retry

* fix(downloads): recover local archives before remote transfer checks

* test(downloads): resolve archive fixture from workspace root

* fix(downloads): distinguish reused archive inodes by creation time

* fix(downloads): bind fresh archive reservations to owned files

* fix(downloads): clean reservations when ownership writes fail

* fix(downloads): commit archive reservation and ownership atomically

* fix(downloads): retain captures until replacement restoration succeeds

* fix(downloads): require durable ownership before cleanup relocation

* fix(downloads): preserve 64-bit archive file identities on Windows

* refactor(release): keep capture fixture constants in their shared module

* fix(downloads): preserve the last link of captured foreign files

* fix(downloads): expose retained archive recovery files

* fix(downloads): keep recovery instructions open while copying

tools/coverage/coverage-policy.json

@@ -36,8 +36,15 @@
                 {
                     "path": "apps/electron-backend/src/app/events/database/downloads.events.ts",
                     "statements": {
-                        "minimumCovered": 86,
-                        "minimumPercent": 58.5
+                        "minimumCovered": 79,
+                        "minimumPercent": 62.69
+                    }
+                },
+                {
+                    "path": "apps/electron-backend/src/app/events/database/download-removal-requests.ts",
+                    "statements": {
+                        "minimumCovered": 53,
+                        "minimumPercent": 91.37
                     }
                 }
             ]