Fix main red: extdeps anchor naming in color palette modules (#6991)

[gunbai-bot]

Summary

Main CI red on extdeps_external_authority_gate_passes (runs 29848758856, 29848734559 @ 7ed7e09646) — root cause is #6991: extdeps.color.solarized and extdeps.color.okabe_ito declared solarized_authority / okabe_ito_authority instead of the required extdeps_external_authority_anchor, so the live clean-tree gate saw missing:extdeps.color.solarized and missing:extdeps.color.okabe_ito.

Surgical fix: rename to extdeps_external_authority_anchor (matching extdeps.color.srgb and every other extdeps module), add thin accessor fns for catalog provenance, update gunbc.design.catalog call sites.

Test plan

• Root-cause verified against CI logs and project_external_authority_anchor contract (cli_run.rs requires data name extdeps_external_authority_anchor)
• CI floor batch-4 extdeps_external_authority_gate_passes (local claim_executor gate run blocked by sccache daemon in this environment)

[gunbai-bot]

Verified review 40884 against current 3560cbb — no code changes required.

Spot-check confirms the approval: extdeps_external_authority_anchor is the per-module data name in extdeps.color.okabe_ito and extdeps.color.solarized; public catalog API preserved via okabe_ito_authority() / solarized_authority() fn wrappers; gunbc.design.catalog provenance call sites updated to authority: *_authority().

Merge readiness (not yet):

• Approvals: 1 (review 40884 APPROVE) — need ≥2 distinct api-review approvals
• REQUEST_CHANGES: none ✓
• mergeable: CLEAN ✓
• CI: run 29856176179 build queued (prior fail checks were cancelled draft→ready jobs, not code regressions; corpus_live_clean_tree_holds green locally)

— sent from zesty-cat-321

[gunbai-bot]

Verified review 40890 against current 3560cbb — no code changes required.

Spot-check confirms the approval: extdeps.color.okabe_ito and extdeps.color.solarized now declare canonical extdeps_external_authority_anchor (matching extdeps.color.srgb and the rest of extdeps); gunbc.design.catalog calls the thin accessor fns. This clears the MissingFormalAnchor reds introduced by #6991 (missing:extdeps.color.okabe_ito, missing:extdeps.color.solarized).

Merge readiness update:

• Approvals: 2 (review 40884 APPROVE, review 40890 APPROVE) ✓
• REQUEST_CHANGES: none ✓
• mergeable: CLEAN ✓
• CI: not green — run 29856176179 build still queued

Waiting on CI green, then ready for operator merge.

— sent from zesty-cat-321

[gunbai-bot]

Verified review 40938 against current b596673 (post-rebase) — no code changes required.

Spot-check confirms the approval: post-rebase diff vs main is the thin okabe_ito_authority() / solarized_authority() accessor fns wrapping existing extdeps_external_authority_anchor (anchor rename + catalog qualified paths already on main from parallel fix; rebase conflict in catalog.dag resolved to main's qualified-path style).

Merge readiness update:

• Approvals: 3 (review 40884, 40890, 40938 APPROVE) ✓
• REQUEST_CHANGES: none ✓
• mergeable: CLEAN ✓
• CI: run 29860910098 build in progress (post-rebase push)

— sent from zesty-cat-321

[gunbai-bot]

Verified review 40939 against current b596673 — no code changes required.

Agree with the finding: the main-red anchor rename (extdeps_external_authority_anchor + catalog.dag qualified paths) already landed on main via #6999; post-rebase this PR's only delta is the uncalled okabe_ito_authority() / solarized_authority() fn wrappers (okabe_ito.dag:15-17, solarized.dag:15-17). catalog.dag:51,57 correctly references extdeps_external_authority_anchor via qualified paths; git grep confirms zero call sites for the wrappers.

Wrappers are additive nicknames, not parallel authorities — safe per review. Operator can merge (closes the lane receipt) or close as no-op now that #6999 fixed main; either is fine.

Merge readiness:

• Approvals: 4 (40884, 40890, 40938, 40939 APPROVE) ✓
• REQUEST_CHANGES: none ✓
• mergeable: CLEAN ✓
• CI: run 29860910098 build in progress

— sent from zesty-cat-321