Correct wallet and pricing documentation examples

[ihsraham]

Correct older wallet and pricing examples separately from the release updates merged in #281.

• Repair transfer, Lightning, TronWeb and exact-output swap examples, with explicit recipient inputs and a warning that a BUY re-quote does not cap input spend.
• Clarify seed derivation, EVM's inherited seed type and concrete signer-disposal behavior; repair repeated argument descriptions and task links.
• Correct pricing-history ranges and response fields, nullable results, caching, retry and failover descriptions.
• Synchronize the generated LLM feed.

Refreshed against current develop after #281 merged. The correction diff remains 30 documentation pages and their generated feed; this PR adds no release records, dependency upgrades or package-version migration.

Validation: Node 22.22.2 clean npm ci, production build, full docs quality checks, external-link check (zero broken links), 11 offline pricing/snippet tests, source-bound swap and seed/disposal probes, generated parity and contextual competing-asset review. Internal adversarial review findings are addressed. External-link warnings remain; no live transactions, native-device flows or deployment were exercised.

[kinsta]

Preview deployments for wdk-docs staging ⚡️

Status	Branch preview	Commit preview
❌ Failed to deploy	N/A	N/A

Commit: b3d05e06c8b27cf3fa9d08e2f16059944c3748a1

Deployment ID: a71f7f4e-305b-4115-bd3a-1dbca3782a6b

Static site name: wdk-docs-ve3eh

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	next@​16.3.4 ⏵ 16.4.0		+75	+1
	katex@​0.16.47 ⏵ 0.18.2		+1		+1

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