cleanup: drop legacy .ao/ tracking post-rename #2055

Job	Run time
clippy	53s
rustfmt	19s
cargo-check (orchestrator-cli)	1m 39s
cargo-check (llm-cli-wrapper)	29s
cargo-check (orchestrator-core)	36s
cargo-check (agent-runner)	31s
cargo-check (orchestrator-web-contracts)	13s
cargo-check (orchestrator-web-api)	1m 13s
cargo-check (orchestrator-web-server)	1m 25s
cargo-check (protocol)	26s
smoke-help	1m 6s
	8m 50s

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