feat(model): bump recommendation Opus 4.7 → 4.8 + v1.78.0 (closes #365)#371
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Opus 4.8 launched 2026-05-28. Sentiment day 3-5 settled positive; proof-of-life via `claude --print --model claude-opus-4-8` confirmed reachability. `opus[1m]` alias auto-resolves to latest Opus on CC v2.1.154+, so settings.json template is unchanged — prose-and- version-bump only. Min CC v2.1.111+ → v2.1.154+ (required for opus[1m] to resolve to 4.8). Updated prose across 7 wizard surface files; bumped version across all 6 SDLC checklist locations + CHANGELOG. Un-run gates 2 (A/B coder quality) and 3 (24h dogfood) tracked as post-deploy follow-up obligations on #365. If real-world use surfaces the system-card-flagged regressions for 4.8 (prompt-injection +60% on Gray Swan, file-deletion tendency, eval-awareness affecting wizard output), revert via a single prose-only PR. Tests: test-hooks 160/160, test-self-update 153/153, test-doc-consistency 41/41, test-docs-usability 29/29 (validates 1.78.0 anchor), test-audit- session-load 10/10, test-repo-complexity 11/11.
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Summary
opus[1m]alias to resolve to 4.8)opus[1m]alias auto-resolves to latest Opus, so settings.json template is unchanged — prose-and-version-bump onlyWhy now
claude --print --model claude-opus-4-8confirmed reachability on current CC v2.1.159What changed
SDLC.md,CLAUDE_CODE_SDLC_WIZARD.md,skills/sdlc/SKILL.md,skills/setup/SKILL.md,skills/update/SKILL.mdhooks/model-effort-check.sh,cli/lib/repo-complexity.jsCI_CD.md,tests/e2e/local-shepherd.sh,tests/test-hooks.sh,tests/test-repo-complexity.sh(comments)package.json,.claude-plugin/{plugin,marketplace}.json,CHANGELOG.mdEffort semantics preserved. Strict effort behavior introduced in 4.7 carried forward to 4.8 —
maxremains the recommended default,xhighthe floor. References to "Opus 4.7+" with the plus sign are intentional historical anchors.Un-run gates tracked as post-deploy obligations on #365
Revert path: Since
settings.jsontemplate is unchanged (alias does the resolution), revert is prose-only if 4.8 surfaces the system-card-flagged regressions (Gray Swan prompt-injection +60%, file-deletion tendency, eval-awareness affecting wizard output).Test plan
tests/test-hooks.sh— 160/160tests/test-self-update.sh— 153/153tests/test-doc-consistency.sh— 41/41tests/test-docs-usability.sh— 29/29 (validates new 1.78.0 anchor in skills/update/SKILL.md)tests/test-audit-session-load.sh— 10/10 (skills/update/SKILL.md trimmed back under 5K cap after CHANGELOG entry addition)tests/test-repo-complexity.sh— 11/11validategreen/sdlcsession start hook output mentions "Opus 4.8" not "4.7"