* feat(pubsub): persistent seqno validation and diagnostic commands
- upgrade go-libp2p-pubsub to v0.15.0
- add persistent seqno validator using BasicSeqnoValidator
stores max seen seqno per peer at /pubsub/seqno/<peerid>
survives daemon restarts, addresses message cycling in large networks (#9665)
- add `ipfs pubsub reset` command to clear validator state
- add `ipfs diag datastore get/count` commands for datastore inspection
requires daemon to be stopped, useful for debugging
- change pubsub status from Deprecated to Experimental
- add CLI tests for pubsub and diag datastore commands
- remove flaky pubsub_msg_seen_cache_test.go (replaced by CLI tests)
* fix(pubsub): improve reset command and add deprecation warnings
- use batched delete for efficient bulk reset
- check key existence before reporting deleted count
- sync datastore after deletions to ensure persistence
- show "no validator state found" when resetting non-existent peer
- log deprecation warnings when using --enable-pubsub-experiment
or --enable-namesys-pubsub CLI flags
* refactor(test): add datastore helpers to test harness
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Co-authored-by: Andrew Gillis <11790789+gammazero@users.noreply.github.com>
