feat: improved pluginContext

[RohitKushvaha01]

Closes #2804

TOKEN_ALREADY_ISSUED will no longer happen and a valid context is always asigned to plugins regardless of the plugin state

[greptile-apps]

Greptile Summary

The PR replaces the globally exposed plugin-context module with an app-owned context generator backed by a trusted native session.

• Establishes the native session before loading plugin scripts.
• Adds secure token generation, validation, invalidation, and secret-deletion operations.
• Restores the existing empty-string default for missing secrets.
• Removes the Cordova JavaScript clobber and updates the dependency lockfile.

Confidence Score: 5/5

The PR appears safe to merge because the previously reported missing-secret regression is fixed and no blocking failure remains.

No blocking failure remains; getSecret now defaults absent values to an empty string rather than passing null through the native bridge.

Important Files Changed

Filename	Overview
src/lib/loadPlugin.js	Establishes the trusted native connection before loading plugin code and generates the context through the new app-owned module.
src/lib/pluginContext.js	Implements plugin context operations and preserves an empty-string default when a requested secret is absent.
src/plugins/pluginContext/src/android/Tee.java	Adds session-gated token issuance, cryptographically generated secrets, token invalidation, and secret deletion operations.
src/plugins/pluginContext/plugin.xml	Removes the globally clobbered JavaScript plugin-context API.
package-lock.json	Refreshes the resolved dependency graph without changing the plugin-context runtime contract.

Sequence Diagram

sequenceDiagram
  participant Loader as Plugin loader
  participant Tee as Native Tee service
  participant Script as Plugin script
  Loader->>Tee: establishConnection
  Tee-->>Loader: trusted session
  Loader->>Script: load main.js
  Loader->>Tee: requestToken(session, pluginId, manifest)
  Tee-->>Loader: plugin-scoped token
  Loader-->>Script: initialize with PluginContext

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[RohitKushvaha01]

@greptileai