chore(release): 2.0.0 — version.txt + CHANGELOG

CHANGELOG.md

@@ -6,6 +6,8 @@ Format follows [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+## [2.0.0] — 2026-10-06
+
 ### Added
 - **Higgsfield pack, off by default**: `make plugin` installs the `@higgsfield/cli` CLI (Step 8.6) and clones the skills of higgsfield-ai/skills into `skills-external/higgsfield-*` through the new `lib/higgsfield-skills.sh`; `make update` refreshes the skills, and the CLI when npm installed it; `make doctor` reports the CLI and its session without ever warning. The pack belongs to no profile: `lib/toggle-external.sh enable higgsfield` links the seven allowlisted media skills, `enable higgsfield-websites` the landing-page aid, and no `profile set` or `make link` re-enables either. `CLAUDE.global.md` routes explicit media-generation asks to it. Hermetic suite `lib/tests/higgsfield.test.sh`.
 - **Effort round (BDR-108)**: every skill carries an entry level next to its model pin. `lib/effort-pins.txt` (map) + `lib/effort-pins.sh` (idempotent re-apply after the last vendoring step of `install-plugins.sh` and `update-all.sh`) replace the hardcoded brainstorming/writing-plans loop and extend the pins to the design stack (high, one level per stack since the last loaded wins), superpowers, agent-skills and the 21st pack; `skills-perso` low, `pdf-translate` medium, `site-motion` high; doctrine: the design stack loads paired with the first Read (a lone Skill call applies nothing). Model pins stay tier aliases: the latest version of a tier is also the cheapest or same-priced, so the quality/price trade-off is tier × effort, never version. `lib/effort-audit.py` prints thinking coverage per scope (sub-agent records carry no thinking count on ~90 % of requests: EVAL-037's "executors stay cheap" was a measurement gap, not a finding).

version.txt

@@ -1 +1 @@
-1.5.0
+2.0.0