Add multi-profile support for switching between accounts

[axelpaul]

Summary

• Adds named profile support for users with multiple Krónan accounts (e.g., personal + shared family group)
• kronan token <token> --name <name> saves tokens as named profiles
• kronan profiles lists all saved profiles with active indicator
• kronan profile <name> switches the active profile
• kronan profile remove <name> removes a profile
• Backward compatible with the existing ~/.kronan/token file

Motivation

Krónan supports shared customer groups (family/household accounts). Each group has its own access token. This feature lets users store multiple tokens and switch between them without re-entering credentials.

Test plan

• Save two tokens with different names: kronan token <t1> --name personal and kronan token <t2> --name family
• Verify kronan profiles shows both with active indicator
• Verify kronan profile <name> switches and subsequent commands use the new profile
• Verify kronan profile remove <name> removes correctly
• Verify backward compat: kronan token <t> (without --name) still works, uses identity name as profile name

[arnif]

Thanks for this great contribution! The multi-profile support is a really useful feature. I've tested it and overall it works well with full backwards compatibility.

One issue to fix before merge:
There's a duplicate 'profile' case label in src/index.ts that causes a lint error. See inline comment on the specific line.

Once that's fixed, this is ready to merge!

[arnif]

Inline review note:

File: src/index.ts around line 542

The line:

case "me":
case "profile": {

creates a duplicate case error because case "profile": is already used on line 125 for profile management.

Fix: Change line 542 to just:

case "me": {

(remove the case "profile": alias since "profile" now has its own command)

[axelpaul]

@arnif Issue fixed

[arnif]

Thanks for the quick fix! All checks pass now:

✅ Lint passes
✅ TypeScript typecheck passes
✅ All 13 tests passing
✅ Backwards compatibility maintained - existing token works
✅ New profile commands work correctly
✅ 'me' command works without duplicate case error

This is a great addition to the CLI. Approving for merge!

[arnif]

Ég lét laga þessa format villu bara :)

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