Feature/eas query profile

[remdev]

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[Copilot]

Pull request overview

Adds Outlook-like Exchange ActiveSync profile support by introducing configurable query encoding and first-class device profile metadata for headers and Provision payloads.

Changes:

• Adds QueryEncoding selection with plain URI query support.
• Adds device profile fields, headers, and Provision DeviceInformation.
• Updates README, spec coverage, and tests for query/profile behavior.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
README.md	Documents Outlook-like profile configuration.
internal/spec/coverage.csv	Adds required spec rows for query/device profile behavior.
eas/provision.go	Adds Provision DeviceInformation WBXML structures.
client/request.go	Adds query encoding type and ordered plain query encoding.
client/request_extra_test.go	Extends plain query ordering assertions.
client/integration_test.go	Adds integration tests for plain queries and device headers.
client/headers.go	Adds device profile header application helper.
client/cmd_provision.go	Adds device information to Provision requests.
client/client.go	Adds config/client fields, defaults, validation, and query encoding selection.
client/client_profile_test.go	Adds Provision device information coverage.
client/client_extra_test.go	Adds unknown query encoding validation test.

Comments suppressed due to low confidence (2)

client/client.go:190

• Defaulting the device-profile fields makes them present for every client, so ApplyDeviceProfileHeaders will emit Outlook/iOS/RU/Apple headers even when the caller did not opt into that profile. It also prevents existing ExtraHeaders values for the same X-MS-Device* keys from being merged, because mergeExtraHeaders skips keys already set by these defaults, which is a breaking change for the previously documented customization path.

	if c.DeviceModel == "" {
		c.DeviceModel = defaultDeviceModel
	}
	if c.DeviceOS == "" {
		c.DeviceOS = "iOS 17.5"
	}
	if c.DeviceOSLanguage == "" {
		c.DeviceOSLanguage = "ru"
	}
	if c.Carrier == "" {
		c.Carrier = "Apple"
	}
	if c.DeviceUserAgent == "" {
		c.DeviceUserAgent = "Outlook-iOS-Android/1.0"

README.md:107

• This recommends setting Locale for a plain-query profile, but EncodePlain does not include the locale and the Config comment says plain queries use Accept-Language instead. As written, the README implies Locale: 0x0419 affects the plain request when it is actually ignored for QueryEncodingPlain.

Many servers key off the request query shape and Outlook-style device metadata. Use `QueryEncoding: client.QueryEncodingPlain` to send `Cmd=...&User=...&DeviceId=...&DeviceType=...`, `DeviceType: "Outlook"` when emulating Outlook, and `Locale: 0x0419` with `AcceptLanguage: "ru-RU"` for ru-RU. First-class device profile fields are sent as `X-MS-Device*` headers; keep `ExtraHeaders` for integration-specific headers that are not modeled directly. If you must avoid HTTP/2 to match an older appliance or proxy, pass `ForceHTTP11: true` with `HTTPClient: nil`; if you inject your own `HTTPClient`, tune its transport yourself (`ForceHTTP11` is ignored).

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