docs: comprehensive documentation updates and modernization

- Update BUILDING.md with current build system information
- Modernize various README files across the project
- Update CHANGELOG.md with recent changes
- Improve documentation consistency and formatting
- Update platform-specific documentation (iOS, Electron, Docker)
- Enhance test documentation and build guides

TASK_storage.md

@@ -1,7 +1,6 @@
 
 # What to do about storage for native apps?
 
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 ## Problem
 
 We can't trust iOS IndexedDB to persist. I want to start delivering an app to people now, in preparation for presentations mid-June: Rotary on June 12 and Porcfest on June 17.
@@ -14,7 +13,6 @@ We can't trust iOS IndexedDB to persist. I want to start delivering an app to pe
 
 Also, with sensitive data, the accounts info should be encrypted.
 
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 # Options
 
 * There is a community [SQLite plugin for Capacitor](https://github.com/capacitor-community/sqlite) with encryption by [SQLCipher](https://github.com/sqlcipher/sqlcipher).
@@ -29,16 +27,12 @@ Also, with sensitive data, the accounts info should be encrypted.
 
 * Not an option yet: Dexie may support SQLite in [a future version](https://dexie.org/roadmap/dexie5.0).
 
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 # Current Plan
 
 * Implement SQLite for Capacitor & web, with encryption. That will allow us to test quickly and keep the same interface for native & web, but we don't deal with migrations for current web users.
 
 * After that is delivered, write a migration for current web users from IndexedDB to SQLite.
 
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 # Current method calls
 
 ... which is not 100% complete because the AI that generated thus claimed no usage of 'temp' DB.
@@ -80,5 +74,3 @@ Logs operations:
 db.logs.get(todayKey) - Gets logs for a specific day
 db.logs.update(todayKey, { message: fullMessage }) - Updates logs
 db.logs.clear() - Clears all logs
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