[ui] improve start/stop button

[capcom6]

Summary by CodeRabbit

• Bug Fixes
  • Start/Stop control now reflects the actual service running state by syncing from live status (instead of the previous checked state).
• UI Updates
  • Replaced the Start/Stop ToggleButton with a MaterialButton.
  • Button label and background tint now update dynamically (green when running, grey when stopped).
• Resource Updates
  • Added new colors for running/non-running states.
  • Added “Start Service” and “Stop Service” labels.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 4b261978-d524-4d40-ad52-022cd38e013e

📥 Commits

Reviewing files that changed from the base of the PR and between ed106cf and a5c1592.

📒 Files selected for processing (4)

• app/src/main/java/me/capcom/smsgateway/ui/HomeFragment.kt
• app/src/main/res/layout/fragment_home.xml
• app/src/main/res/values/colors.xml
• app/src/main/res/values/strings.xml

🚧 Files skipped from review as they are similar to previous changes (3)

• app/src/main/res/values/colors.xml
• app/src/main/res/values/strings.xml
• app/src/main/res/layout/fragment_home.xml

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Walkthrough

The start control changes from a ToggleButton to a MaterialButton. HomeFragment reads the running state from stateLiveData for clicks and updates the button label and tint from the observer. Two colors and two strings are added.

Changes

MaterialButton Start/Stop Control

Layer / File(s)	Summary
Layout widget and supporting resources app/src/main/res/layout/fragment_home.xml, app/src/main/res/values/colors.xml, app/src/main/res/values/strings.xml	buttonStart becomes a MaterialButton with margin, tint, and corner radius; the layout root is reformatted; and start/stop strings plus green/grey colors are added.
HomeFragment click handler and state observer app/src/main/java/me/capcom/smsgateway/ui/HomeFragment.kt	ColorStateList is added, the click handler uses stateLiveData.value instead of isChecked, and the observer sets the button text and backgroundTintList from the running state.

Estimated code review effort: 2 (Simple) | ~10 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main UI change to the start/stop button.
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.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ui/improve-start-stop-button

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@app/src/main/res/layout/fragment_home.xml`:
- Around line 254-259: The MaterialButton with android:id of buttonStart is
missing a default text label in the XML layout, causing it to render blank until
stateLiveData emits a value. Add an android:text attribute to the MaterialButton
element with a default label value of "Start" to ensure the button displays
properly on initial render and provides appropriate visual feedback to the user
before any state changes occur.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3d9ce403-c6f0-4239-977e-8fc52b3df4db

📥 Commits

Reviewing files that changed from the base of the PR and between 361de56 and 1364eae.

📒 Files selected for processing (4)

• app/src/main/java/me/capcom/smsgateway/ui/HomeFragment.kt
• app/src/main/res/layout/fragment_home.xml
• app/src/main/res/values/colors.xml
• app/src/main/res/values/strings.xml

[github-actions]

🤖 Pull request artifacts

file	commit
app-release.apk	a5c1592
app-release.aab	a5c1592
app-insecure.apk	a5c1592
app-insecure.aab	a5c1592