Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-pin-backend-identity-cli.md; R0=6a494d3977e6557e7bebe0e5bb1c4a12091296e0.
Impact: task metadata only; the feature workspace starts at 6a494d3977.
Refs: .task/feature-pin-backend-identity-cli.md
Why: Backend #180 moved the identity CLI to pkg/identity (shared with
Agent-System-RDM per PR 276); Dev main should consume it so composed
binaries carry the same identity semantics and capabilities output.
Evidence: make test exit 0 (combined suite on the bumped pin);
make test-pins ok; rows in the task card.
Impact: gitlink only (bbe9773 -> acabb85, spans #177/#179/#180).
Refs: .task/feature-pin-backend-identity-cli.md; user goal directive
2026-10-12 (implement remaining U1/U2/U3 items in order).
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任务卡:.task/feature-pin-backend-identity-cli.md @
a5840dcdWhy/Evidence/Impact 见提交;gitlink-only(bbe9773→acabb85,含 Backend #177/#179/#180)。make test 组合全绿 + test-pins ok(证据表)。