Feature: Multi-Profile Selection

[yimsk]

Multi-Profile Selection 👤

Enable selecting multiple AWS profiles for simultaneous querying across accounts.

Current Behavior

• P key opens profile browser
• Single selection only
• Switches to selected profile

Proposed Behavior

┌ Select Profiles ───────────────────────┐
│ ☑ SDK Default                          │
│ ☐ Env/IMDS Only                        │
│ ☑ production      (111111111111)       │
│ ☐ staging         (222222222222)       │
│ ☐ development     (333333333333)       │
└────────────────────────────────────────┘
Space: Toggle | Enter: Apply | a: All | n: None

Features

1. Multi-select UI: Space to toggle, checkboxes
2. Parallel Fetch: Query selected profiles concurrently
3. Profile/Account Column: Add columns to resource lists (末尾、マルチプロファイル時のみ)

UX Flow

1. Press P → Profile selector opens
2. Space to toggle profiles (multi-select)
3. Enter to apply
4. Resources from all selected profiles displayed with Profile/Account columns

Implementation Tasks

• ProfileSelector: single → multi-select
• App state: selection ProfileSelection → selections []ProfileSelection
• DAO: parallel fetch across profiles (handle different credentials)
• Render: add Profile/Account columns (conditional)
• Handle SSO/MFA considerations for multiple profiles

Security Considerations

• Different profiles may have different auth mechanisms (SSO, MFA, IAM keys)
• Need to handle credential refresh for each profile independently
• Consider rate limiting across multiple accounts

Related

• Feature: Multi-Region Selection #33 Multi-Region Selection (implement first, similar pattern)
• Feature: Persist Region/Profile Selection to Config #50 Persist Region/Profile Selection (config persistence)

[yimsk]

Implemented in #61