open/config-audit
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity Actions

docs(knowledge): refresh corpus to Opus 4.8 era (CC 2.1.114->181 Batch 3)

Browse source 
The knowledge base was frozen at ~v2.1.111, describing an Opus-4.7 world
after CC shipped Opus 4.8 and Fable 5. Refreshed three agent-facing
knowledge files; every fact re-verified against the official changelog
(~/.claude/cache/changelog.md, CC 2.1.181) on 2026-06-18.

- feature-evolution.md: new Opus-4.8-era rows above the v2.1.111 freeze --
  Opus 4.8 default + /effort xhigh (2.1.154), Fable 5 Mythos-class
  (2.1.170), post-session hook (2.1.169), MessageDisplay (2.1.152),
  /simplify -> /code-review (2.1.147), /config key=value (2.1.181).
- hook-events-reference.md: 26 -> 28 events (+MessageDisplay, +post-session);
  documented Stop/SubagentStop additionalContext output field.
- claude-code-capabilities.md: 2026-06 model/effort lineup table;
  bundled skills /simplify -> /code-review; documented /config key=value.
- cc-2.1.x-changelog-delta.md: marked SUPERSEDED by the gap-matrix.

Verification caught two version errors in STATE/matrix, corrected to the
changelog:
- Stop/SubagentStop additionalContext is 2.1.163, not 2.1.165 (2.1.165 was
  "Bug fixes" only; matrix row 109 already said 2.1.163).
- settings `agent` field introduced 2.0.59; 2.1.157 = honored for
  dispatched `claude agents` sessions, not the introduction.

New tests/knowledge/knowledge-staleness.test.mjs (8 tests) encodes the
verified facts as a re-freeze guard (RED before edits, GREEN after).

Full suite: 850/850 green (+8). self-audit PASS, A(100)/A(97).
This commit is contained in:
Kjell Tore Guttormsen 2026-06-18 13:35:00 +02:00
commit 624f5edabc
5 changed files with 119 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

7
knowledge/feature-evolution.md
View file

@ -2,6 +2,7 @@
> Timeline of major features, most recent first. Covers features with configuration impact.
> Source: Official Claude Code documentation, verified 2026-04-03; 2026-04 entries verified via research/03-claude-code-changes-config-surfaces.md (2026-04-19).
> 2026-06 entries (window v2.1.114–v2.1.181) re-verified against the official Claude Code changelog on 2026-06-18.
---
@ -9,6 +10,12 @@
| Approx. Date | Feature | Config Impact |
|-------------|---------|---------------|
| 2026-06 (v2.1.181) | **`/config key=value` in-session settings** | Set any setting from the prompt — `/config thinking=false` — in interactive, `-p`, and Remote Control. Lets `/config-audit` settings recommendations be applied without hand-editing settings.json. |
| 2026-05 (v2.1.170) | **Claude Fable 5 (Mythos-class)** | New top-capability model family; 1M context by default (a `[1m]` id suffix is normalised away). Auto mode falls back to the best available Opus for orgs without Opus 4.8 enabled. |
| 2026-05 (v2.1.169) | **`post-session` lifecycle hook** | Runs after the session ends and before the workspace is deleted — snapshot uncommitted work or export logs (self-hosted runner). Kebab-case, distinct from `SessionEnd`. |
| 2026-04 (v2.1.154) | **Opus 4.8 — new default model** | Defaults to high effort; `/effort xhigh` (`effortLevel: "xhigh"`) is the new top tier for the hardest tasks. The lean system prompt is now the default for all models except Haiku, Sonnet, and Opus 4.7 and earlier. The settings `agent` field is honored for dispatched `claude agents` sessions (v2.1.157). |
| 2026-04 (v2.1.152) | **`MessageDisplay` hook event** | Hooks can transform or hide assistant message text as it is displayed. |
| 2026-04 (v2.1.147) | **`/simplify` renamed to `/code-review`** | Reports correctness bugs at a chosen effort (`/code-review high`); `--comment` posts inline PR comments. The old cleanup-and-fix behaviour was removed. |
| 2026-04 (v2.1.111) | **Opus 4.7 + token-efficiency surfaces** | New env vars `ENABLE_PROMPT_CACHING_1H`, `FORCE_PROMPT_CACHING_5M`, `CLAUDE_CODE_DISABLE_1M_CONTEXT`. New settings keys around `tui` / `autoScrollEnabled`. Granular commit attribution via `attribution.commit` / `attribution.pr` (replaces `includeCoAuthoredBy`). |
| 2026-04 (v2.1.83+) | **Sandbox + managed-only enterprise lockdown** | Added settings keys: `sandbox.enabled`, `sandbox.failIfUnavailable`, `sandbox.allowUnsandboxedCommands`, `sandbox.filesystem.allowRead/denyRead`, `sandbox.network.deniedDomains/allowedDomains`, `sandbox.enableWeakerNetworkIsolation`. Managed-only flags: `allowManagedHooksOnly`, `allowManagedMcpServersOnly`, `allowManagedPermissionRulesOnly`. |
| 2026-03 (v2.1.91) | **`disableSkillShellExecution`** | Blocks inline `!command` shell expansion in skills. Mitigates skill-side prompt-injection vector. |