chore: bump tnt-core-bindings to v0.17.0

[tangletools]

Summary

Pin tnt-core-bindings to the chore/bindings-v0.17.0 branch in tangle-network/tnt-core (commit 705b4c0) pending the crates.io publish of 0.17.0. This is a temporary git dep; once the version is published we'll flip back to a crates.io pin.

v0.17.0 carries:

• Subscription billing rearchitecture (requestService + fundService flow).
• Payments facet split with self-only distributePayment on TanglePaymentsDistributionFacet.
• RFQ replay / freshness / cumulative TTL hardening.
• Collapsed approveService(ApprovalParams) entry point — old approveServiceWithXxx matrix removed.
• claimRewards / claimRewardsAll griefing isolation via per-token try/catch.
• O(1) operator stake aggregation with VPM share-pool slashing.
• Multi-asset subscription bill weighting.

Upstream: tangle-network/tnt-core#137.

Compile / test status

• cargo check --workspace: clean.
• cargo test --workspace --lib: 1128 passed, 0 failed, 23 ignored.

No source changes were required — the bindings re-exports consumed by crates/clients/tangle/src/contracts.rs, crates/qos/src/heartbeat.rs, and crates/x402/src/gateway.rs are still present in v0.17.0.

Follow-up

Flip the dep back to tnt-core-bindings = "0.17.0" once the crate is published.

[github-actions]

PR Quality Gate Summary

• Status: fail
• Selected class: not set
• Required class: Class B
• Reason: Code changes detected with local blast radius.
• Changed files: 2

Blocking issues

• Missing required section: '## Change Class'
• Missing required section: '## Behavior Contract'
• Missing required section: '## Risk And Scope'
• Missing required section: '## Verification'
• Missing required section: '## Harness Evidence'
• Missing required section: '## Checklist'
• Change Class section must specify 'Selected class: ...'
• Verification section must include at least one command (inline or fenced).