Greptile Summary

This PR fixes plugin installation by adding a missing "checksumText" routing case to the outer switch statement in System.java. Without it, checksumText action calls fell through to default: return false, meaning the SHA-256 checksum handler that already existed in the inner thread-pool switch was never reached.

Key changes:

• Adds case "checksumText": to the routing switch (lines 183–206) so the action is recognised and dispatched to the background thread-pool executor.
• No other logic is changed; the SHA-256 implementation was already present.

Notable pre-existing issue (not introduced by this PR):

• The checksumText handler inside the inner switch unnecessarily submits a second cordova.getThreadPool().execute(...) task even though it is already running in a thread-pool thread. This is redundant overhead and should be cleaned up.

Confidence Score: 4/5

• Safe to merge — the one-line routing fix is correct and the pre-existing SHA-256 implementation is sound.
• The change is minimal (a single case label added to a routing switch) and directly enables a pre-existing, already-correct handler. SHA-256 via MessageDigest is standard and secure. The only concern is a pre-existing style inefficiency (nested thread pool submission) that does not affect correctness.
• No files require special attention beyond the noted redundant nested thread pool call in System.java.

Important Files Changed

Sequence Diagram

sequenceDiagram
    participant JS as JavaScript (WebView)
    participant CP as CordovaPlugin.execute()
    participant SW1 as Routing Switch
    participant TP as Thread Pool
    participant SW2 as Inner Switch
    participant MD as MessageDigest (SHA-256)

    JS->>CP: exec("checksumText", [text])
    CP->>SW1: switch(action)
    Note over SW1: Before fix: falls to default → return false
    Note over SW1: After fix: case "checksumText" → break
    SW1-->>CP: break (action recognized)
    CP->>TP: cordova.getThreadPool().execute(Runnable)
    TP->>SW2: switch(action) in background thread
    SW2->>TP: (redundant) getThreadPool().execute(lambda)
    TP->>MD: digest(text.getBytes("UTF-8"))
    MD-->>TP: SHA-256 hex string
    TP-->>JS: callbackContext.success(hexString)

_{Last reviewed commit: a05da2c}