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ctrlrun 0.5.0 on Python 3.14.2

CTRLRun demo — five ways an agent action goes wrong, and what stops it.
Policy: refunds up to €1,000 are autonomous, up to €10,000 need a human, above that are denied.

1. Duplicate effect after a lost response

   refund €500  →  remote commits  →  response lost  →  effect: AMBIGUOUS
   agent retries the same refund
   ✗ BLOCKED — effect may already have committed; blind retry refused
   remote refund calls: 1
   only a human moves it on:  ctrlrun resolve refund:txn_1 --committed|--failed

2. Approval mutation

   agent proposes refund €2,000  →  human approves apr_… (bound to the action hash)
   agent executes refund €5,000  →
   ✗ BLOCKED — approved action ≠ requested action (mismatch)

3. Concurrent agents, same effect

   Agent A  reserve refund:txn_123  →  ACQUIRED  →  executes
   Agent B  reserve refund:txn_123  →
   ✗ BLOCKED — already reserved (in_progress)

4. Approval replay

   approval apr_… used once  →  consumed
   same approval presented again                            →
   ✗ BLOCKED — single-use approval already consumed

5. Authority escalation

   human €100,000 delegable  →  finance agent €25,000  →  support agent €2,000
   support agent's grant: dlg_…
   support agent requests €50,000  →
   ✗ BLOCKED — outside the delegated grant (authority_constraint)
   remote refund calls: 0
   finance agent tries to delegate €50,000 under its own €25,000  →  refused (containment: constraints)
   support agent requests €1,500  →  authority permits it, and the policy asks a human (apr_…)
   two axes, and an action needs both: the stricter of the pair wins

npm install pyodide jsdom
node docs/assets/verify-browser-demo.mjs    # Python, the wheel, and the five scenarios
node docs/assets/verify-browser-wiring.mjs  # this page's button, against a real DOM

pip install ctrlrun && ctrlrun demo