chore: create and join agent wallets through sdk-go

[MicBun]

resolves: https://github.com/truflation/website/issues/4165

What

Routes agent-wallet rule creation and joining through the Go SDK instead of reimplementing the submission in the Python binding, so there is a single source of truth — matching how execute_agent_action already delegates to sdk-go's ExecuteAgentAction.

• MAACreateRule / MAAJoin bindings now call sdk-go's CreateAgentRule / JoinAgentAddress and return the tx hash plus the rule_id / maa_address that sdk-go derives.
• client.py uses those returned values instead of re-deriving locally; the standalone derivation helpers in utils.py are unchanged and still exported.
• Re-pins sdk-go to pick up the rule flat-fee encoding (the fee now reaches the node as NUMERIC(78,0)), so no fee conversion is duplicated in the Python layer.

Notes

• The rule flat-fee encoding fix lives in sdk-go (merged):
  • chore: send agent-wallet rule flat fees as on-chain decimals sdk-go#194

[holdex]

Time Submission Status

Member	#	Time	Running Total	Status	Last Update
MicBun			3h	✅ Submitted	Jun 22, 2026, 12:02 PM

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: fc9f11b2-56f8-44e4-a6d3-2eedf74a2fc7

📥 Commits

Reviewing files that changed from the base of the PR and between fbef9ad and b78616b.

⛔ Files ignored due to path filters (1)

• go.sum is excluded by !**/*.sum

📒 Files selected for processing (3)

• bindings/maa.go
• go.mod
• src/trufnetwork_sdk_py/client.py

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/maa-rule-flat-fee-numeric

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[MicBun]

@holdex pr submit-time 3h