fix: comprehensive sentence case violations - Phase 2 (#53)

Fixed UI text sentence case issues per ObsidianReviewBot feedback:

**SettingsTab.ts:**
- 'Speech Note' → 'Speech note'
- 'Openai' → 'OpenAI' (brand name)

**EnhancedSettingsTab.ts:**
- 'Speech Note' → 'Speech note'

**ProviderSettingsContainer.ts:**
- 'Configuration' → 'configuration'
- Fixed unsafe any assignment in JSON.parse

**FormatOptions.ts:**
- '(Dash)' → '(dash)'
- '(Asterisk)' → '(asterisk)'
- '(Plus)' → '(plus)'
- '(Bullet)' → '(bullet)'

**main.ts:**
- 'Speech-to-Text plugin' → 'Speech-to-text plugin'

Total: 10 sentence case fixes + 1 type safety fix across 5 files

src/main.ts

@@ -63,10 +63,10 @@ export default class SpeechToTextPlugin extends Plugin {
                 this.createStatusBarItem();
             });
 
-            new Notice('Speech-to-Text plugin loaded successfully');
+            new Notice('Speech-to-text plugin loaded successfully');
         } catch (error) {
             console.error('Failed to load Speech-to-Text plugin:', error);
-            new Notice('Failed to load Speech-to-Text plugin. Check console for details.');
+            new Notice('Failed to load speech-to-text plugin. Check console for details.');
         }
     }
 

src/ui/formatting/FormatOptions.ts

@@ -234,10 +234,10 @@ export class FormatOptionsModal extends Modal {
                     .setDesc('Character to use for bullets')
                     .addDropdown((dropdown) => {
                         dropdown
-                            .addOption('-', '- (Dash)')
-                            .addOption('*', '* (Asterisk)')
-                            .addOption('+', '+ (Plus)')
-                            .addOption('•', '• (Bullet)')
+                            .addOption('-', '- (dash)')
+                            .addOption('*', '*  (asterisk)')
+                            .addOption('+', '+ (plus)')
+                            .addOption('•', '• (bullet)')
                             .setValue(this.options.bulletChar || '-')
                             .onChange((value) => {
                                 this.options.bulletChar = value;

src/ui/settings/EnhancedSettingsTab.ts

@@ -131,7 +131,7 @@ export class EnhancedSettingsTab extends PluginSettingTab {
 
         // 제목
         const titleContainer = headerEl.createDiv({ cls: 'header-title-container' });
-        new Setting(titleContainer).setName('Speech Note').setHeading();
+        new Setting(titleContainer).setName('Speech note').setHeading();
 
         // 상태 표시
         const statusBadge = titleContainer.createEl('span', {

src/ui/settings/SettingsTab.ts

@@ -48,7 +48,7 @@ export class SettingsTab extends PluginSettingTab {
         containerEl.empty();
 
         // Add main title
-        new Setting(containerEl).setName('Speech Note').setHeading();
+        new Setting(containerEl).setName('Speech note').setHeading();
         this.debug('Title setting created');
 
         // Add debug info section at the top
@@ -316,7 +316,7 @@ export class SettingsTab extends PluginSettingTab {
         // API Endpoint
         new Setting(containerEl)
             .setName('API endpoint')
-            .setDesc('Openai API endpoint (leave default unless using custom endpoint)')
+            .setDesc('OpenAI API endpoint (leave default unless using custom endpoint)')
             .addText((text) =>
                 text
                     .setPlaceholder('https://api.openai.com/v1')

src/ui/settings/provider/ProviderSettingsContainer.ts

@@ -95,7 +95,7 @@ export class ProviderSettingsContainer {
 
         // 타이틀
         const titleEl = headerEl.createDiv({ cls: 'provider-title' });
-        new Setting(titleEl).setName('🎯 Transcription provider Configuration').setHeading();
+        new Setting(titleEl).setName('🎯 Transcription provider configuration').setHeading();
 
         // 확장/축소 토글
         const toggleBtn = headerEl.createEl('button', {
@@ -541,7 +541,7 @@ export class ProviderSettingsContainer {
 
             try {
                 const content = await file.text();
-                const parsed = JSON.parse(content);
+                const parsed: unknown = JSON.parse(content);
                 const keys: Record<string, string> = {};
                 if (isPlainRecord(parsed)) {
                     Object.entries(parsed).forEach(([key, value]) => {