feat(agentloop): Token-/Kosten-Budget mit Hard-Cap (issue #151) - #228

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Delqhi merged 1 commit into

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feat/issue-151-token-budget

Jun 16, 2026

Delqhi commented Jun 16, 2026

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Implements issue #151. MaxTokens + BudgetWarnRatio + Completion.Usage.

Closes #151


          feat(agentloop): Token-/Kosten-Budget mit Hard-Cap (issue #151)

e4f4ea2

What ships:
  - cmd/sin-code/internal/agentloop/loop.go:
    - New Completion.Usage + Usage struct (PromptTokens, CompletionTokens, TotalTokens).
    - New Loop.MaxTokens field: 0 disables (backwards-compatible).
    - New Loop.BudgetWarnRatio field: fraction of MaxTokens that fires hooks.BudgetWarn.
    - Token accumulator state (totalTokens, warnedBudget).
    - Budget check after appending msgs: if total >= MaxTokens, fires
      BudgetExhausted + records TypeTokenBudgetExhausted + either
      returns an error or a checkpointed Result (AllowContinuation).
  - cmd/sin-code/internal/ledger/store.go: new EntryType TypeTokenBudgetExhausted.
  - cmd/sin-code/internal/hooks/hooks.go: new events BudgetWarn, BudgetExhausted.
  - cmd/sin-code/internal/agentloop/loop_token_test.go: 3 tests
    (disabled, exhausts, allow-continuation).

Acceptance criteria (from #151):
  - [x] MaxTokens caps cumulative tokens across the run.
  - [x] MaxTokens=0 disables the guard (legacy behavior).
  - [x] BudgetWarnRatio fires hooks.BudgetWarn once when crossed.
  - [x] AllowContinuation converts the cap into a checkpoint.
  - [x] go test ./cmd/sin-code/internal/agentloop/... all green.

Hard mandates honored:
  - M2: no new deps.
  - M3: token accounting is post-verify; never short-circuits the gate.
  - M7: 3/3 tests pass under go test -race -count=1.

Refs: #151

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🏆 CEO Audit — A+ (100.0/100)

Metric	Value
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Score	100.0/100
Critical findings	0
High findings	0
Profile	`QUICK`
Min grade gate	B

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Critical findings	0
High findings	0
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Run ID: 27646324747 · Commit: ${github.sha}

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Delqhi merged commit 5ff1979 into main

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Delqhi deleted the feat/issue-151-token-budget branch

June 16, 2026 20:35

github-advanced-security AI found potential problems

View reviewed changes

cmd/sin-code/internal/ledger/store.go

               	TypeStallDetected EntryType = "stall_detected"
+              	// TypeTokenBudgetExhausted is recorded when cumulative token usage exceeds
+              	// MaxTokens and the run stops spending (issue #151).
+              	TypeTokenBudgetExhausted EntryType = "token_budget_exhausted"

Delqhi mentioned this pull request

Loop: Stagnations-Erkennung + adaptives Stop-Budget #150

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