Update android mobile with more action handlers

[jebrans]

Problem

Separately, the androidDevice agent exposes only setAlarm, setTimer, and
searchNearby. Common device requests have no handler, and setAlarm cannot
express a recurring alarm.

Changes

Device actions. Seven additions to the androidDevice schema, each dispatched
through the existing client-agent path and launched through the shared intent
funnel that reports a structured failure when no app can handle the request:

• showLocation opens the maps app on a named place.
• dialPhoneNumber opens the dialer with a number pre-filled.
• composeSms opens the messaging app with a recipient and body pre-filled.
• webSearch runs a query in the default search app.
• openWebPage opens a URL in the browser.
• showAlarms and showTimers open the clock app's respective tabs.
• setAlarm gains an optional days parameter for recurring alarms.

dialPhoneNumber uses ACTION_DIAL rather than ACTION_CALL, and composeSms
uses ACTION_SENDTO rather than SEND_SMS, so neither action places a call or
sends a message on its own and no new permissions are required. The user
confirms in the target app. Each new intent has a matching <queries> entry in
the manifest; without one, package visibility filtering on API 30 and above makes
resolveActivity return null and the action wrongly reports that no app is
available.

Action payloads are parsed by dedicated parsers sharing a common validation
layer that caps text length, rejects control characters, and reads strings via
opt(...) as? String so a JSON null does not arrive as the literal string
"null". URLs containing whitespace are rejected rather than repaired, so a
malformed address cannot be silently turned into a valid one for a host the model
never named. Web URLs have their scheme lowercased before dispatch, because
intent filter scheme matching is case-sensitive.

Testing

• Added JVM tests for each new parser covering valid payloads, missing and
  null fields, oversized and control-character input, malformed URLs and phone
  numbers, and unsupported schemes. Extended the alarm and agent tests for
  repeat days and the new dispatch branches.
• testDebugUnitTest assembleDebug lintDebug succeeds; 148 tests pass with no
  failures.
• Verified ./gradlew runs from a fresh checkout of the branch, confirming the
  wrapper jar survives checkout under the new attribute.
• Verified on an emulator that all six new intents resolve to real handlers
  (clock, dialer, messaging, browser, and the activity resolver).
• Verified the connection, transcript, and conversation-resume behaviour
  introduced by Preserve chat state still works end to end after the merge fix.

Follow-up

• The build fixes repair main for anyone building this sample and are
  independent of the device actions. They can be split into their own PR if that
  is easier to land quickly.
• setAlarm and setTimer pass EXTRA_SKIP_UI, so they complete without user
  confirmation, unlike the actions added here. That is existing behaviour and is
  left unchanged, but it is worth revisiting.
• Further device actions remain unimplemented and can follow the same parser and
  dispatch pattern.