Merge pull request #123 from babarot/babarot/perf-reduce-syscalls

perf: parallelize storage List() calls in Manager

perf: eliminate redundant stat calls in UI rendering

perf: use cached file size in rejectBySize instead of DirSize

Merge pull request #122 from babarot/babarot/refactor-file-storage-cleanup

refactor: replace history migration init() with explicit call

refactor: replace env init() with explicit Init() function

refactor: extract Prompter interface for testable CLI interactions

refactor: remove File.storage circular reference

refactor: extract findStorageForFile helper in Manager

Merge pull request #121 from babarot/babarot/update-architecture-docs

refactor: rename manager variables to match Trash interface

docs: update architecture diagram for refactoring changes

Merge pull request #120 from babarot/babarot/refactor-phase3-config-decoupling

refactor: decouple UI layer from full config.Config