refactor: restructure settings modules, rename Intelligent tab, group panel sections

[tangcent]

Summary

Resolves long-standing structural smells in the settings UI and consolidates duplicated TitledBorder boilerplate. Backwards-compatible: existing users migrate from ApplicationSettingsState/ProjectSettingsState on next startup (no unified-state release has shipped yet).

1. Field moves (eliminate cross-module leaks)

Two settings were stored in a different module from the panel that edited them, requiring bespoke cross-module shims:

• enumFieldAutoInferEnabled: GeneralSettings → ParsingOutputSettings. It's enum inference, lives in the Parsing & Output panel, but was stored in GeneralSettings via resetEnumFieldFrom / applyEnumFieldTo / isEnumFieldModified shims. Folded into the standard resetFrom/applyTo/isModified flow; shims deleted.
• globalEnvironments: IntelligentSettings → EnvironmentSettings. Edited in the Environments tab but parked in IntelligentSettings because EnvironmentSettings was PROJECT-only. EnvironmentSettings is now mixed APP+PROJ scope (modeled on RuleFileSettings). The panel's resetGlobalEnvsFrom / applyGlobalEnvsTo / isGlobalEnvsModified shims are deleted; EnvironmentService now touches only EnvironmentSettings.

2. Migration

SettingsMigrationActivity: MIGRATION_VERSION 2 → 3. Both fields are written to their new module keys. Legacy ApplicationSettingsState/ProjectSettingsState retained as the migration source. Orphaned unified-state keys are harmless (never read).

3. Class & tab rename

• IntelligentSettings → ParsingOutputSettings (file renamed via git mv, history preserved). The old name described only one of six fields.
• Tab label "Intelligent" → "Parsing & Output"; "Other" → "Backup".
• Module FQN is the persistence key, but no release has shipped the unified-state code yet, so every user migrates from legacy state directly to the new key — no orphans.

4. Panel layout restructuring

• New shared helper SettingsUiKit (titledPanel / labeledRow) consolidates the TitledBorder boilerplate that was inlined 3× in GrpcSettingsPanel, 1× in EnvironmentSettingsPanel, 2× in GeneralSettingsPanel.
• GeneralSettingsPanel: flat list of 11 controls + 2 trailing titled boxes → 6 titled groups in concept order: Framework Support, Scanning, Editor, Output, Diagnostics, Cache Management. Log Level moved out of the Output cluster into its own Diagnostics group.
• ParsingOutputSettingsPanel: 6 interleaved toggles → two titled groups (Inference, Output Format) matching the new tab name. Path Multi stays as a labeled row outside.
• GrpcSettingsPanel / EnvironmentSettingsPanel / createRepositoryPanel: inlined TitledBorder blocks replaced with SettingsUiKit.titledPanel.
• Removed private createTitledPanel and AiAssistantSection.compactRow in favor of SettingsUiKit.

Test plan

• ./gradlew compileKotlin compileTestKotlin — clean
• ./gradlew test --tests "com.itangcent.easyapi.settings.*" — pass
• ./gradlew test --tests "*EnvironmentService*" — pass
• ./gradlew test --tests "*Case2_SeeWithAutoMatch*" --tests "*Case1_IntelligentMode*" --tests "*Case2_IntelligentModeAutoMatch*" --tests "*ComprehensiveEnumCasesTest*" — pass (the cases that exercise enumFieldAutoInferEnabled = true)
• Manual spot-check in runIde: confirm General tab shows 6 titled groups, Parsing & Output shows 2, Backup renamed, enum checkbox persists, global environments editor persists across restart.

Out of scope (deferred Tier 3)

• Tooltip wording cleanup (several tooltips restate the label).
• Moving outputDemo out of GeneralSettings into a Markdown-exporter module.
• Dropping dead TAB_RULES / TAB_POSTMAN constants.
• Grouping Feign/JAX-RS/Actuator under a "Frameworks" header (they're already in a titled group).
• Note: EnumValueResolver's unrelated INTELLIGENT mode concept (Source.INTELLIGENT_SINGLE, etc.) intentionally not renamed — that's enum-resolution domain vocabulary from issue #1383, unrelated to the settings class.

[github-actions]

📦 Plugin has been packaged for this PR. You can download easy-api-3.1.5.252.0.zip from the GitHub Actions workflow run by clicking on the "Artifacts" dropdown.

[codecov]

Codecov Report

❌ Patch coverage is 79.85612% with 28 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.961%. Comparing base (58758ce) to head (77b5580).

Files with missing lines	Patch %	Lines
...om/itangcent/easyapi/settings/ui/SettingsPanels.kt	68.657%	20 Missing and 1 partial ⚠️
...ent/easyapi/settings/module/EnvironmentSettings.kt	25.000%	2 Missing and 1 partial ⚠️
...nt/easyapi/settings/ui/EnvironmentSettingsPanel.kt	70.000%	3 Missing ⚠️
...com/itangcent/easyapi/settings/ui/SettingsUiKit.kt	95.833%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##            master      #725       +/-   ##
=============================================
+ Coverage   63.937%   63.961%   +0.024%     
=============================================
  Files          362       363        +1     
  Lines        20750     20750               
  Branches      5108      5110        +2     
=============================================
+ Hits         13267     13272        +5     
- Misses        5609      5610        +1     
+ Partials      1874      1868        -6     

Flag	Coverage Δ
unittests	63.961% <79.856%> (+0.024%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
.../com/itangcent/easyapi/exporter/EndpointBuilder.kt	82.692% <100.000%> (+2.885%)	⬆️
...syapi/exporter/springmvc/SpringMvcClassExporter.kt	81.092% <100.000%> (ø)
...lin/com/itangcent/easyapi/psi/EnumValueResolver.kt	62.632% <100.000%> (ø)
...tangcent/easyapi/psi/helper/DocMetadataResolver.kt	73.469% <100.000%> (ø)
...itangcent/easyapi/script/env/EnvironmentService.kt	82.759% <100.000%> (-0.758%)	⬇️
...pi/settings/migration/SettingsMigrationActivity.kt	88.889% <100.000%> (+0.139%)	⬆️
...angcent/easyapi/settings/module/GeneralSettings.kt	100.000% <ø> (ø)
...t/easyapi/settings/module/ParsingOutputSettings.kt	100.000% <100.000%> (ø)
...itangcent/easyapi/settings/ui/GrpcSettingsPanel.kt	36.864% <100.000%> (-2.812%)	⬇️
...com/itangcent/easyapi/settings/ui/SettingsUiKit.kt	95.833% <95.833%> (ø)
... and 3 more

... and 3 files with indirect coverage changes

---

Continue to review full report in Codecov by Harness.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 58758ce...77b5580. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-actions]

📦 Plugin has been packaged for this PR. You can download easy-api-3.1.5.252.0.zip from the GitHub Actions workflow run by clicking on the "Artifacts" dropdown.