add v1.9.1 upgrade + app_pubkey plumbing + hermes ICA test updates

[akobrin1]

• Register v1.9.1 as a migration‑only upgrade (standard handler).
• Persist and expose app_pubkey on actions; regenerate action protobufs and update query paths/tests.
• Add Hermes ICA cascade flow coverage + log filtering for supernode debug noise; refactor IBC suite chain config.-
• Devnet/Hermes script updates and IBC test helpers adjustments.

[roomote]

Rooviewer   See task on Roo Cloud

Review complete. No issues found.

The latest commit (7abcc51) includes:

• Test improvement: Using a valid public key from test suite instead of arbitrary bytes for app_pubkey validation
• Atomicity fix: Moving the duplicate account check in SetSuperNode() before the primary store write to prevent partial writes

Previous reviews

• 7d9f5c2: Review #1

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