docs: add WAIL to the PlatformType -> OtherWebClient mapping

[jlucaso1]

Summary

whatsapp-rust#1293 regenerated the vendored whatsapp.proto from a newer whatspec bundle and picked up a new DeviceProps.PlatformType::WAIL variant. companion_web_client_type_for_platform (wacore/src/companion_reg.rs) maps it to OtherWebClient, same as the other non-browser/non-attested platforms (iOS, AR/VR, Wear OS, the proto's UNKNOWN).

concepts/authentication.mdx documents that mapping function's arm-by-arm behavior for readers relying on the docs rather than the source, and its list of platforms collapsing to OtherWebClient was now stale.

Changes

• concepts/authentication.mdx: add WAIL to the list of PlatformType variants that collapse to OtherWebClient, with the same one-line rationale given in the upstream PR (Android-letter attestation this crate can't produce, and '0' being server-rejected).

Not included

• PR #1293 is primarily a build-tooling change (a new whatspec-codegen crate that owns and verifies the vendored-artifact regeneration) — no other part of it is user-facing.
• Its other two breaking proto changes (AIRichResponseContentItemsMetadata oneof rename, EncryptMessageOutput.messageKey removal) and the new WA_WEB_VERSION/WA_WEB_VERSION_STR exports aren't referenced by any existing doc page, so there's nothing stale to fix there.
• Left the changelog alone per standing instructions.

Ref: oxidezap/whatsapp-rust#1293

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Generated by Claude Code

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Summary by cubic

Update authentication docs to include WAIL in the PlatformType -> OtherWebClient mapping used by companion_web_client_type_for_platform. This keeps the page in sync with the latest whatsapp.proto update and matches how non-browser platforms are handled.

^{Written for commit 8e83e60. Summary will update on new commits.}

Summary by CodeRabbit

• Documentation
  • Updated platform mapping documentation to clarify that WAIL is categorized as OtherWebClient.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 21186411-8324-437f-8af7-87bbee0d4bda

📥 Commits

Reviewing files that changed from the base of the PR and between 49d704b and 8e83e60.

📒 Files selected for processing (1)

• concepts/authentication.mdx

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📝 Walkthrough

Walkthrough

The authentication documentation now states that WAIL maps to OtherWebClient. Existing mappings remain unchanged.

Changes

Authentication platform mapping

Layer / File(s)	Summary
Document fallback mapping concepts/authentication.mdx	The PlatformType documentation includes WAIL in the OtherWebClient fallback mapping.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Poem

A rabbit checked the mapping line,
“WAIL joins OtherWebClient just fine.”
The other entries stay in place,
With tidy docs and steady pace.
Hop, hop—clearer words now shine!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the documentation change that adds WAIL to the OtherWebClient mapping.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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