feat: organization-key (Collections) support + TUI reveal from any pane #107

Job	Run time
headless build (no TUI / clipboard deps)	40s
test (macos-latest)	1m 11s
rustfmt	13s
test (ubuntu-latest)	51s
REUSE lint	13s
vault --version emits §13.2 attribution	51s
cargo-audit	3m 12s
cargo-deny	38s
clippy	35s
	8m 24s

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