chore(changelog): append v2.1.159 settings drift run — 2026-06-01 10:58 AM PKT

14 action items: 24 missing env vars added (incl. AWS/GCP/OTEL), 5 duplicate rows fixed,
broken link removed, DISABLE_AUTO_COMPACT annotated unverified, 3 prior-session
findings rejected per Rule 8A (wrong rename, premature REMOVED, undocumented skipLfs).
OTEL_LOG_TOOL_CONTENT resolved from 20+ run ON HOLD — now confirmed on official page.

https://claude.ai/code/session_013k14BPqKZQKiv9xbgu9AxB

changelog/best-practice/claude-settings/changelog.md

@@ -647,3 +647,24 @@
 | 14 | LOW | Suspect Key Recurrence | `OTEL_LOG_TOOL_DETAILS` — v2.1.157 changelog says `OTEL_LOG_TOOL_DETAILS=1` includes tool parameters in telemetry, but still NOT on official /en/env-vars page after 20+ runs. Already in report with annotation (Rule 10B option a) | ✋ ON HOLD (kept — recurring from 2026-04-14 v2.1.107; v2.1.157 changelog re-confirms behavior) |
 | 15 | LOW | Suspect Key Recurrence | `OTEL_LOG_TOOL_CONTENT` still changelog-only. Defer per Rule 8A | ✋ ON HOLD (kept — recurring from 2026-04-16 v2.1.110) |
 | 16 | INVALID | Source Guard | Changelog v2.1.158 lists `CLAUDE_CODE_ENABLE_AUTO_MODE` but env-vars page does not yet document it — flagged as changelog-only (item #5), not as a confirmed env-vars-page var, per Rule 8A/5D | ❌ INVALID (changelog-only; annotated rather than treated as docs-confirmed) |
+
+---
+
+## [2026-06-01 10:58 AM PKT] Claude Code v2.1.159
+
+| # | Priority | Type | Action | Status |
+|---|----------|------|--------|--------|
+| 1 | HIGH | Version Bump | Update report version badge from v2.1.158 → v2.1.159 and header "As of v2.1.158" → "As of v2.1.159"; update env var count from "180+" → "200+" | ✅ COMPLETE (badge, header, and count updated) — NEW |
+| 2 | HIGH | Duplicate Settings Key | Remove string-type `skillOverrides` duplicate row — NOT in official docs (object-type row at the correct position is confirmed). String-form `"off"`/`"user-invocable-only"`/`"name-only"` values are documented under the object type | ✅ COMPLETE (string-type duplicate removed; object-type row kept) — NEW |
+| 3 | HIGH | Duplicate Env Vars | Remove 5 duplicate env var rows: `CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN`, `CLAUDE_CODE_FORCE_SYNC_OUTPUT`, `CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE`, `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY`, `CLAUDE_CODE_ENABLE_FEEDBACK_SURVEY_FOR_OTEL` — each appeared twice with different (conflicting) descriptions | ✅ COMPLETE (5 duplicate rows removed; first/better-quality instance kept for each) — NEW |
+| 4 | HIGH | Broken Link | Remove `https://shipyard.build/blog/claude-code-cheat-sheet/` from Sources — returns 403 Forbidden (Rule 9B) | ✅ COMPLETE (dead link removed from Sources section) — NEW |
+| 5 | HIGH | New Env Vars | Add `ANTHROPIC_AWS_API_KEY`, `ANTHROPIC_AWS_BASE_URL`, `ANTHROPIC_AWS_WORKSPACE_ID` — Claude Platform on AWS vars confirmed on official /en/env-vars page; missing from report | ✅ COMPLETE (added after `ANTHROPIC_BEDROCK_SERVICE_TIER`) — NEW |
+| 6 | HIGH | New Env Vars | Add `GCLOUD_PROJECT`, `GOOGLE_APPLICATION_CREDENTIALS`, `GOOGLE_CLOUD_PROJECT` — GCP/Vertex AI pass-through vars confirmed on official /en/env-vars page; missing from report | ✅ COMPLETE (added after `ANTHROPIC_VERTEX_PROJECT_ID`) — NEW |
+| 7 | HIGH | New Env Vars | Add 5 OTEL vars confirmed on official /en/env-vars page: `OTEL_EXPORTER_OTLP_ENDPOINT`, `OTEL_EXPORTER_OTLP_HEADERS`, `OTEL_LOG_TOOL_CONTENT` (RESOLVED from ON HOLD — now official), `OTEL_METRICS_EXPORTER`, `OTEL_TRACES_EXPORTER` | ✅ COMPLETE (added in OTEL section after `OTEL_LOG_USER_PROMPTS`) — NEW |
+| 8 | HIGH | New Env Vars | Add 13 CLAUDE_CODE_*/other env vars confirmed on official /en/env-vars page: `CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD`, `CLAUDE_CODE_ALT_SCREEN_FULL_REPAINT`, `CLAUDE_CODE_ATTRIBUTION_HEADER`, `CLAUDE_CODE_DISABLE_POLICY_SKILLS`, `CLAUDE_CODE_ENABLE_BACKGROUND_PLUGIN_REFRESH`, `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS`, `CLAUDE_CODE_EXTRA_BODY`, `CLAUDE_CODE_MCP_ALLOWLIST_ENV`, `CLAUDE_CODE_NATIVE_CURSOR`, `CLAUDE_CODE_PROPAGATE_TRACEPARENT`, `CLAUDE_ASYNC_AGENT_STALL_TIMEOUT_MS`, `DO_NOT_TRACK`, `INIT_PROMPT` | ✅ COMPLETE (each added at appropriate section in env vars table) — NEW |
+| 9 | MED | Unverified Annotation | Mark `DISABLE_AUTO_COMPACT` as *(not in official docs — unverified)* per Rule 5D — confirmed NOT on official /en/env-vars D section (D section has: DISABLE_AUTOUPDATER, DISABLE_COMPACT, DISABLE_ERROR_REPORTING, DISABLE_FEEDBACK_COMMAND, DISABLE_TELEMETRY, DO_NOT_TRACK — no DISABLE_AUTO_COMPACT) | ✅ COMPLETE (annotation added) — NEW |
+| 10 | LOW | Resolved ON HOLD | `OTEL_LOG_TOOL_CONTENT` — ON HOLD since v2.1.110 (2026-04-16) as changelog-only. Now confirmed on official /en/env-vars O section. Added to report without annotation | ✅ COMPLETE (RESOLVED after 20+ consecutive ON HOLD runs) — RESOLVED (from 2026-04-16 v2.1.110) |
+| 11 | LOW | Suspect Key Recurrence | `OTEL_LOG_TOOL_DETAILS` — v2.1.157 changelog re-confirms `OTEL_LOG_TOOL_DETAILS=1` includes tool parameters. Still NOT on official /en/env-vars page (O section confirmed). Annotation kept | ✋ ON HOLD (kept — recurring from 2026-04-14 v2.1.107) |
+| 12 | INVALID | Rule 8A Rejection | Previous session flagged rename `CLAUDE_BASH_MAINTAIN_PROJECT_WORKING_DIR` → `CLAUDE_CODE_BASH_MAINTAIN_PROJECT_WORKING_DIR`. Official env-vars page confirms `CLAUDE_BASH_MAINTAIN_PROJECT_WORKING_DIR` (without `_CODE_`) is the correct name. No rename | ❌ INVALID (official page confirms current name; prior-session finding was wrong) — NEW |
+| 13 | INVALID | Rule 8A Rejection | Previous session flagged `CLAUDE_CODE_OPUS_4_6_FAST_MODE_OVERRIDE` as REMOVED per changelog v2.1.154. Official env-vars page still lists it without any REMOVED tag. Per Rule 8A, no change | ❌ INVALID (official page still lists var; per Rule 8A, changelog alone insufficient to mark REMOVED) — NEW |
+| 14 | INVALID | Rule 8A Rejection | Previous session flagged `skipLfs` for plugin marketplace source types. Official settings page makes no mention of `skipLfs` or LFS. Not added per Rule 8A | ❌ INVALID (not found on official settings page) — NEW |