# Verification Report

**Change**: multi-image-per-turn-ingestion
**Version**: N/A

---

## Completeness

| Metric | Value |
|--------|-------|
| Tasks total | 12 |
| Tasks complete | 11 |
| Tasks incomplete | 1 |

Incomplete task:
- `5.2 During sdd-archive, sync openspec/specs/...` (archive-only task; non-blocking for verify)

---

## Build & Tests Execution

**Formatting**: ✅ Passed
- Command: `cargo fmt --manifest-path clients/agent-runtime/Cargo.toml --all -- --check`

**Lint / type-check**: ✅ Passed
- Command: `cargo clippy --manifest-path clients/agent-runtime/Cargo.toml --all-targets -- -D warnings`

**Targeted tests**:
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml multimodal_max_images_per_turn`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml process_admits_four_images_and_preserves_provider_order`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml process_rejects_when_image_count_exceeds_configured_limit`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml process_rejects_five_images_when_default_limit_is_omitted`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml stage_channel_images_cleans_up_partial_staging_on_failure`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml process_emits_provider_error_with_full_multi_image_metadata`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml build_multimodal_api_messages_preserves_all_images_in_order`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml image_blocks_preserve_multiple_images_in_order`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml build_gemini_contents_preserves_all_images_in_order`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml image_ingress_multi_image_turn_uses_turn_level_fields`
- ✅ `cargo test --manifest-path clients/agent-runtime/Cargo.toml image_ingress_rejected_turn_can_include_effective_limit`

**Coverage**: ➖ Not configured

---

## Spec Compliance Matrix

| Requirement | Scenario | Test | Result |
|-------------|----------|------|--------|
| channel-image-ingestion / Canonical Ingestion Pipeline | Multiple images in one admitted turn are staged in order | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order` + provider ordering regressions | ✅ COMPLIANT |
| channel-image-ingestion / Canonical Ingestion Pipeline | Limit applies to the full turn, not only the first image | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order` | ✅ COMPLIANT |
| channel-image-ingestion / Size and Count Limits | Default count limit admits up to four images | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order`; `config/schema.rs > parsed_multimodal_defaults_are_applied` | ✅ COMPLIANT |
| channel-image-ingestion / Size and Count Limits | Configured lower count limit is enforced | `channels/mod.rs > process_rejects_when_image_count_exceeds_configured_limit` | ✅ COMPLIANT |
| channel-image-ingestion / Size and Count Limits | Over-limit turn is rejected deterministically | `channels/mod.rs > process_rejects_five_images_when_default_limit_is_omitted`; `channels/mod.rs > process_rejects_when_image_count_exceeds_configured_limit` | ✅ COMPLIANT |
| channel-image-ingestion / Observability | Admitted multi-image turn reports turn-level metadata | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order`; `observability/traits.rs > image_ingress_multi_image_turn_uses_turn_level_fields` | ✅ COMPLIANT |
| channel-image-ingestion / Observability | Rejected over-limit turn reports full attempted count | `channels/mod.rs > process_rejects_five_images_when_default_limit_is_omitted`; `channels/mod.rs > process_rejects_when_image_count_exceeds_configured_limit`; `observability/traits.rs > image_ingress_rejected_turn_can_include_effective_limit` | ✅ COMPLIANT |
| channel-image-ingestion / Regression Coverage | Regression suite covers the default and configured count limits | `config/schema.rs > multimodal_max_images_per_turn_*`; `channels/mod.rs > process_rejects_five_images_when_default_limit_is_omitted`; `channels/mod.rs > process_rejects_when_image_count_exceeds_configured_limit` | ✅ COMPLIANT |
| channel-image-ingestion / Regression Coverage | Regression suite covers observability for multi-image turns | admitted + rejected channel/observability tests above | ✅ COMPLIANT |
| runtime-image-pipeline / Canonical Runtime Representation | Provider dispatch preserves every staged image in order | `providers/compatible.rs > build_multimodal_api_messages_preserves_all_images_in_order`; `providers/anthropic.rs > image_blocks_preserve_multiple_images_in_order`; `providers/gemini.rs > build_gemini_contents_preserves_all_images_in_order` | ✅ COMPLIANT |
| runtime-image-pipeline / Normalization Pipeline | Multi-image turn reaches provider handoff intact | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order` + provider ordering regressions | ✅ COMPLIANT |
| runtime-image-pipeline / Size and Count Limits | Default count limit allows four images | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order`; `config/schema.rs > parsed_multimodal_defaults_are_applied` | ✅ COMPLIANT |
| runtime-image-pipeline / Size and Count Limits | Fifth image triggers whole-turn rejection | `channels/mod.rs > process_rejects_five_images_when_default_limit_is_omitted` | ✅ COMPLIANT |
| runtime-image-pipeline / Error Taxonomy | Deterministic over-limit error reflects effective limit | `channels/mod.rs > process_rejects_when_image_count_exceeds_configured_limit`; `channels/mod.rs > process_rejects_five_images_when_default_limit_is_omitted` | ✅ COMPLIANT |
| runtime-image-pipeline / Configuration Contract | Default max-images value is applied | `config/schema.rs > parsed_multimodal_defaults_are_applied` | ✅ COMPLIANT |
| runtime-image-pipeline / Configuration Contract | Invalid max-images value fails startup validation | `config/schema.rs > multimodal_max_images_per_turn_zero_rejected` | ✅ COMPLIANT |
| runtime-image-pipeline / Observability for Multi-Image Runtime Dispatch | Provider-bound event represents the full dispatched turn | `channels/mod.rs > process_admits_four_images_and_preserves_provider_order`; `observability/traits.rs > image_ingress_multi_image_turn_uses_turn_level_fields` | ✅ COMPLIANT |
| runtime-image-pipeline / Observability for Multi-Image Runtime Dispatch | Provider error still reports the full multi-image turn | `channels/mod.rs > process_emits_provider_error_with_full_multi_image_metadata` | ✅ COMPLIANT |
| runtime-image-pipeline / Regression Coverage | Regression suite covers provider slice preservation | provider ordering regressions above | ✅ COMPLIANT |
| runtime-image-pipeline / Regression Coverage | Regression suite covers deterministic over-limit failures | `channels/mod.rs > process_rejects_when_image_count_exceeds_configured_limit`; `channels/mod.rs > process_rejects_five_images_when_default_limit_is_omitted` | ✅ COMPLIANT |

**Compliance summary**: 20/20 scenarios compliant

---

## Correctness (Static — Structural Evidence)

| Requirement | Status | Notes |
|------------|--------|-------|
| channel-image-ingestion / Canonical Ingestion Pipeline | ✅ Implemented | Effective limit is config-driven; staging loops all images in turn order; provider handoff retains full slice. |
| channel-image-ingestion / Size and Count Limits | ✅ Implemented | Default 4 / ceiling 8 constants, config validation, deterministic whole-turn rejection, and no-staging over-limit behavior are present. |
| channel-image-ingestion / Observability | ✅ Implemented | Rejected events now carry attempted count and effective configured limit; admitted/provider events use ordered `images[]` and `total_byte_len`. |
| channel-image-ingestion / Regression Coverage | ✅ Implemented | Channel-level regressions now cover default/configured limits, rejection text, cleanup, and observability. |
| runtime-image-pipeline / Canonical Runtime Representation | ✅ Implemented | Compatible, Anthropic, and Gemini request builders serialize full image slices in order. |
| runtime-image-pipeline / Normalization Pipeline | ✅ Implemented | Gate uses `effective_max_images_per_turn()` and runtime dispatch preserves admitted images intact. |
| runtime-image-pipeline / Size and Count Limits | ✅ Implemented | Default omitted 5-image rejection regression now proves whole-turn fail-closed behavior. |
| runtime-image-pipeline / Error Taxonomy | ✅ Implemented | User-facing errors include attempted count and effective configured limit. |
| runtime-image-pipeline / Configuration Contract | ✅ Implemented | Optional field, effective helper, startup validation, and logging match spec/design. |
| runtime-image-pipeline / Observability for Multi-Image Runtime Dispatch | ✅ Implemented | Turn-level metadata with compatibility shim is present for admitted, rejected, sent, and provider-error outcomes. |
| runtime-image-pipeline / Regression Coverage | ✅ Implemented | Config, whole-turn rejection, provider ordering, observability, and cleanup all have passing targeted regressions. |

---

## Coherence (Design)

| Decision | Followed? | Notes |
|----------|-----------|-------|
| Add bounded config override with default 4 and ceiling 8 | ✅ Yes | `MultimodalConfig.max_images_per_turn` and validation match the design contract. |
| Keep slice-based handoff (`Vec<StagedImage>` / `&[StagedImage]`) | ✅ Yes | No new provider abstraction introduced; existing slice contract preserved. |
| Emit one turn-level image ingress event with additive per-image summaries | ✅ Yes | `ImageIngressEvent` now includes `images`, `total_byte_len`, and rejected-turn `max_images_per_turn`; single-image shim remains. |
| Clean up partially staged images inside `stage_channel_images()` | ✅ Yes | Mid-loop cleanup exists and stable-path regression now verifies the created temp file is removed. |

---

## Issues Found

**CRITICAL**
- None

**WARNING**
- `tasks.md` still has archive-phase task `5.2` unchecked; this is expected until `sdd-archive` syncs main specs.
- Repo-level non-Rust verify commands listed in `openspec/config.yaml` were not run because this change is isolated to the Rust runtime implementation surface.

**SUGGESTION**
- Consider adding one higher-level bundled runtime test that exercises admitted + rejected + provider-error multi-image flows in a single suite for easier future maintenance.

---

## Verdict

PASS WITH WARNINGS

The implementation now conforms to the proposal, design, tasks, and both delta specs with runtime evidence for every scenario, and the Rust validation gate (`fmt`, `clippy`, targeted tests) is green.
