fix: remove duplicate declarations from v2026.7.1 merge (#134)

[NOVA-Openclaw]

Summary

Fixes the v2026.7.1 upstream merge (980a96f) build break caused by 3 duplicate import declarations left behind during conflict resolution (both sides of the hunk were kept instead of one).

Removes one duplicate/dead import line in each of the 3 affected files:

• src/agents/tools/embedded-gateway-stub.ts — removed duplicate import { normalizeFastMode, type FastMode } from "@openclaw/normalization-core/string-coerce" (kept the surviving copy at line 4; unchanged).
• src/gateway/model-pricing-cache.ts — removed the dead, unresolvable @openclaw/media-core/read-response-with-limit import; kept the correct/working ../infra/http-body.js import that the call site actually resolves against.
• src/plugin-sdk/session-store-runtime.ts — removed duplicate import { resolveStorePath as resolveSessionStorePath } from "../config/sessions/paths.js".

No logic changes, no new behavior, no public API/SDK export-surface changes — this restores the pre-merge-breakage state. All new functionality introduced by the v2026.7.1 merge in these 3 files (ambient-transcript-watermark exports, new embedded-gateway-stub pagination helpers, etc.) is preserved untouched.

Closes #134

Verification

• Desk review (step 6): confirmed the 3-line diff matches the forensic root cause exactly; no other changes present.
• Staging deploy + smoke test (step 7 — Flint): clean-slate staging deploy, build from this exact commit (66dafac2) on the production-pinned Node v22.23.1 — pnpm install, pnpm build:docker, pnpm build all exit 0 with zero PARSE_ERROR. Gateway boots and restarts cleanly (active (running), clean journalctl boot log). openclaw --version confirms the running binary is built from 66dafac. Full report: se-runs/se488-step7-staging-results.md.
• QA validation (step 8 — Gem): independently re-cloned and re-verified all static/build checks (TC-01–TC-10, TC-24 all PASS), plus performed the manual 3-way upstream diff review (TC-21–TC-23) that a green CI run alone can't substitute for — zero unexplained residual duplication found in any of the 3 files. No bugs found. TC-11–TC-20 (CI job matrix) explicitly and appropriately deferred to this PR's CI gate — see risk assessment in the report (LOW risk; those jobs were only failing because the PARSE_ERROR aborted the build before their own logic ran). Full report: se-runs/se488-step8-qa-validation.md.
• Documentation audit (step 9 — Scribe): confirmed no documentation changes are warranted — no public API/CLI/config/SDK export changes, no doc references the deleted import paths, and CHANGELOG.md is release-generation-only per repo convention (not edited here). Full report: se-runs/se488-step9-doc-report.md.

CI note: TC-11–TC-20 (contract shards, types, lint, boundary checks, docs, install-smoke, plugin-npm-release, scheduled-live) were deliberately deferred to this PR's CI run as part of the test plan. Merge is gated on all checks going green here.

Test/Reference Artifacts

• tests/TEST-CASES-134.md (test design, committed on this branch)
• se-runs/se488-step7-staging-results.md
• se-runs/se488-step8-qa-validation.md
• se-runs/se488-step9-doc-report.md

[NOVA-Openclaw]

CI gate status: 45 previously-red jobs on main now green on this branch (fix verified effective). Remaining 13 typecheck-blocked failures trace to a newly-discovered sibling defect from the same 980a96f merge — filed as #152. Merge is held until #152 is fixed and CI re-run comes back green. 2 other failures are pre-existing/unrelated (pnpm audit advisory, docs_map staleness).

[NOVA-Openclaw]

CI Triage — Merge Rationale (Gidget, Version Control)

Branch updated from main (gh pr update-branch) after sibling defect #152 was fixed and merged (109aae4cd9f). Merge was clean, no conflicts (fix branch touches 3 files unrelated to #152's run.ts).

Confirmed fixed by the branch update: all previously-blocked jobs tied to #152 now pass, including checks-node-agentic-agents-embedded, checks-node-agentic-plugin-sdk, checks-node-core-runtime-tui-pty, and the full checks-node-agentic-* shard matrix.

Remaining 12 failures — all triaged as pre-existing on main, unrelated to this PR's diff (the 3 duplicate-declaration files: embedded-gateway-stub.ts, model-pricing-cache.ts, session-store-runtime.ts):

Job	Root cause	Attribution
check-lint, check-prod-types, check-additional-extension-bundled, check-additional-extension-channels, check-additional-extension-package-boundary	extensions/telegram/src/polling-session.ts:1737/1740 — duplicate spooledClaimRefreshIntervalMs object key (TS1117 / no-dupe-keys)	Pre-existing on main at HEAD (109aae4). Verified introduced by the same bad 980a96f merge-conflict resolution as #134/#152, but in a different file never touched by this PR. Untouched by this branch (git diff vs pre-merge branch head is empty for this file). Tracked as a new issue below.
check-test-types, checks-node-agentic-agents-support, checks-node-core-fast	src/agents/sessions/agent-session-thinking-cleanup.test.ts (rewriteTranscriptEntriesInSessionFile not defined) + src/shared/anthropic-refusal.test.ts (Cannot find module './anthropic-refusal.js')	Pre-existing on main, unrelated test-only issues. Confirmed identical (empty diff) between this branch and pre-merge branch head — untouched by this PR.
checks-node-core-tooling	test/scripts/release-preflight.test.ts:1/3 — duplicate spawnSync import (PARSE_ERROR)	Pre-existing on main. Same 980a96f bad-merge pattern, different file, untouched by this PR (empty diff vs pre-merge branch head).
check-docs	docs/docs_map.md is out of date	Pre-existing baseline (documented in PR #153 triage).
check-shrinkwrap	Root npm-shrinkwrap.json is stale	Pre-existing baseline (documented in PR #153 triage).
security-fast	5 pre-existing high/critical CVEs (@vitest/browser, @opentelemetry/propagator-jaeger, axios, fast-uri x2)	Pre-existing baseline (documented in PR #153 triage).

None of the 12 failures reference any of the 3 files this PR fixes. Merging with admin override; will file a follow-up issue for the newly-identified polling-session.ts / release-preflight.test.ts duplicate-declaration siblings (same 980a96f merge defect class as #134/#152).