feat(graceful-handoff)!: integrate with STATE.md continuity system (v3.0.0)

BREAKING: replace the NEXT-SESSION artifact + 3 hooks with a STATE.md-centric,
skill-only design. /graceful-handoff now overwrites the nearest STATE.md (with the
mandatory 👉 NESTE block) instead of writing a separate handover file.

- Remove hooks/ entirely: Stop auto-trigger (operator choice), SessionStart loader
  (redundant with global session-start.sh), statusLine hint (dead — user settings win).
- Invert the pipeline: the model writes STATE.md (only it has the context for 👉 NESTE);
  handoff-pipeline.mjs becomes a slim deterministic helper (--plan / --commit / --dry-run).
- Remote-aware policy: STATE.md tracked on private remotes, local-only (gitignored) on
  public/open mirrors. Authoritative signal: git check-ignore STATE.md.
- SKILL.md rewritten as the Session-Slutt ritual; dropped the Sonnet model pin.
- Docs (README, CLAUDE.md, CHANGELOG), plugin.json 2.1.0→3.0.0, .gitignore cleanup.
- Tests rewritten for --plan/--commit; no-`git add -A` regression preserved. 30/30 green.

Release-cut (tag v3.0.0 + catalog ref bump) pending — separate gated action.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019SiKr4c6GAzQH5n6E6f5NA

tests/skill-structure.test.mjs

@@ -1,4 +1,4 @@
-// skill-structure.test.mjs — Verifies SKILL.md frontmatter and commands/ deletion.
+// skill-structure.test.mjs — Verifies SKILL.md frontmatter (v3.0) and commands/ deletion.
 
 import { test } from 'node:test';
 import { strict as assert } from 'node:assert';
@@ -8,54 +8,62 @@ import { fileURLToPath } from 'node:url';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 const PLUGIN_ROOT = join(__dirname, '..');
+const SKILL = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
+
+function skill() {
+  return readFileSync(SKILL, 'utf-8');
+}
 
 test('SKILL.md exists at expected path', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  assert.ok(existsSync(skillPath), `SKILL.md missing at ${skillPath}`);
+  assert.ok(existsSync(SKILL), `SKILL.md missing at ${SKILL}`);
 });
 
 test('commands/ directory is deleted (hard cut to skills/)', () => {
-  const commandsDir = join(PLUGIN_ROOT, 'commands');
-  assert.ok(!existsSync(commandsDir), 'commands/ directory still exists — should be deleted in v2.0');
+  assert.ok(!existsSync(join(PLUGIN_ROOT, 'commands')), 'commands/ should be deleted');
+});
+
+test('hooks/ directory is deleted (v3.0 removed all hooks)', () => {
+  assert.ok(!existsSync(join(PLUGIN_ROOT, 'hooks')), 'hooks/ should be deleted in v3.0');
 });
 
 test('SKILL.md has disable-model-invocation: true', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  const content = readFileSync(skillPath, 'utf-8');
-  assert.match(content, /^disable-model-invocation: true$/m);
+  assert.match(skill(), /^disable-model-invocation: true$/m);
 });
 
-test('SKILL.md has model: claude-sonnet-4-6', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  const content = readFileSync(skillPath, 'utf-8');
-  assert.match(content, /^model: claude-sonnet-4-6$/m);
+test('SKILL.md has NO model: pin (inherits session model for quality synthesis)', () => {
+  const fm = skill().match(/^---\n[\s\S]*?\n---/)[0];
+  assert.doesNotMatch(fm, /^model:/m);
 });
 
-test('SKILL.md has Bash sub-scoped allowed-tools', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  const content = readFileSync(skillPath, 'utf-8');
-  assert.match(content, /Bash\(git:\*\)/);
-  assert.match(content, /Bash\(node:\*\)/);
+test('SKILL.md allowed-tools is Bash sub-scoped and includes Write', () => {
+  const line = skill().match(/^allowed-tools:.*$/m);
+  assert.ok(line, 'allowed-tools line missing');
+  assert.match(line[0], /Bash\(git:\*\)/);
+  assert.match(line[0], /Bash\(node:\*\)/);
+  assert.match(line[0], /\bWrite\b/);
 });
 
 test('SKILL.md does not pre-approve curl or wget', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  const content = readFileSync(skillPath, 'utf-8');
-  // Frontmatter only — find the allowed-tools line
-  const allowedToolsLine = content.match(/^allowed-tools:.*$/m);
-  assert.ok(allowedToolsLine, 'allowed-tools line missing');
-  assert.doesNotMatch(allowedToolsLine[0], /\bcurl\b/);
-  assert.doesNotMatch(allowedToolsLine[0], /\bwget\b/);
+  const line = skill().match(/^allowed-tools:.*$/m);
+  assert.ok(line, 'allowed-tools line missing');
+  assert.doesNotMatch(line[0], /\bcurl\b/);
+  assert.doesNotMatch(line[0], /\bwget\b/);
 });
 
 test('SKILL.md body references handoff-pipeline.mjs', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  const content = readFileSync(skillPath, 'utf-8');
-  assert.match(content, /handoff-pipeline\.mjs/);
+  assert.match(skill(), /handoff-pipeline\.mjs/);
+});
+
+test('SKILL.md body mandates the 👉 NESTE — START HER block', () => {
+  assert.match(skill(), /👉 NESTE — START HER/);
 });
 
 test('SKILL.md body has Tidsbudsjett (time budget) note', () => {
-  const skillPath = join(PLUGIN_ROOT, 'skills', 'graceful-handoff', 'SKILL.md');
-  const content = readFileSync(skillPath, 'utf-8');
-  assert.match(content, /Tidsbudsjett/);
+  assert.match(skill(), /Tidsbudsjett/);
+});
+
+test('SKILL.md is STATE.md-centric (overwrites the nearest STATE.md)', () => {
+  const s = skill();
+  assert.match(s, /STATE\.md/);
+  assert.match(s, /overskriv/i);
 });