5.8.4: batched sync, namespace forward-alias, and community fixes

[michtio]

Based on the 5.8.3 tag (which sits ahead of v5); fast-forward v5 to 5.8.3 before merging so the site-aware Cockpit collection fix is retained.

Backport round for 5.8.4 on the 5.8.x (v5) line. Reviewed and cherry-picked with original authorship where the change came from a contributor PR; adapted or fixed on top where noted.

Namespace

• Forward-compatibility alias for the 5.9.0 craftpulse\typesense namespace. A Composer files-autoload shim aliases craftpulse\typesense\* to the current percipiolondon\typesense\*, so integrators can migrate their imports and config/typesense.php references now and stay working on 5.8.x. No deprecation is logged on this line (the craftpulse names are the forward target). README + CHANGELOG document the two-way alias guarantee.

Queue

• Batched document sync (Batch document sync jobs #70, @timkelty). Moves sync onto BaseBatchedJob. Reviewed against the author's four stated failure modes and confirmed each holds: flush/create side effects run once in before() (not per reloaded batch), processed IDs live in a public property that survives queue serialization across spawned jobs, loadData() returns an empty Batchable on missing client/collection, and the query is cloned and stably ordered by id. Expected to resolve Phantom Pending Task Appearing On Craft Cloud #69.

Fixes

• Events only bind when an API key is set (Only add Craft events if the API key is set #63, @jamie-s-white). Avoids a save-time error on a fresh install. Adapted on merge: the guard now wraps the current cockpit-aware element filtering (which postdates the PR) and keeps the null-entry guard, rather than the PR's plain instanceof Entry check which would have regressed cockpit element support.
• Delete documents in .all collections (Add the ability to delete documents if the .all syntax is used #64, @jamie-s-white). The delete handler now falls back to the section.all collection, matching the save path, so documents in an .all-defined collection are removed.
• update-schema console command (Update schema console command #61, @jamie-s-white). Drops and recreates each configured collection's fields from config. Follow-up commit makes the destructive behavior explicit (help text + a confirmation prompt, --force to skip) per the author's own suggestion, and removes a dead CP URL rule the PR added (it pointed at a non-existent web action; the feature is console-only).
• Null-entry guard when applying a draft (Error applying draft #67, reported by @mikeymeister). The after-restore / after-move handler could pass a query miss to a non-nullable handleSave() and throw. Guarded, matching the sibling delete path.
• Control-panel action URLs / CRAFT_BASE_CP_URL (Admin Panel Sync/Flash Buttons not respecting CRAFT_BASE_CP_URL - using frontend SITE_URL instead #68, reported by @vardumper). Confirmed the Sync/Flush actions build URLs with cpUrl(), so they respect CRAFT_BASE_CP_URL and post to the control-panel domain (resolving the reported CORS failure when the CP is on a separate domain). Already correct on this line; verified and credited.

Not included

• Add the "multiple" label to collections where appropriate #62 ("multiple" label): skipped. Its is_array($index->section) label logic assumes an array section config (a fork convention); stock v5 uses a string section, so the label would never show. It also conflicts with Batch document sync jobs #70 on SyncDocumentsJob, and its only stock-applicable morsel (an "Unkown" -> "Unknown" typo) is already superseded by the Batch document sync jobs #70 rework.
• Deprecate redundant section configuration #66: excluded by decision.

Verification

The 5.8.x line has no Pest suite. Verified: composer install in the branch, php -l on every changed file, and a line-by-line review of each cherry-pick against this codebase's actual call sites and conventions (old percipiolondon namespace, old code style). The batched-sync serialization behavior was verified against Craft's BaseBatchedJob/__sleep source; the forward alias was verified resolving at runtime.

No release tag is included.