Here’s a clean, first‑time‑friendly blueprint for a **deterministic crash analyzer pipeline** you can drop into Stella Ops (or any CI/CD + observability stack).

---

# What this thing does (in plain words)

It ingests a crash “evidence tile” (a signed, canonical JSON blob + hash), looks up symbols from your chosen stores (ELF/PDB/dSYM), unwinds the stack deterministically, and returns a **stable, symbol‑pinned call stack** plus a **replay manifest** so you can reproduce the exact same result later—bit‑for‑bit.

---

# The contract

### Input (strict, deterministic)

* **signed_evidence_tile**: Canonical JSON (JCS) with your payload (e.g., OS, arch, registers, fault addr, module list) and its `sha256`.

  * Canonicalization must follow **RFC 8785 JCS** to make the hash verifiable.
* **symbol_pointers**:

  * ELF: debuginfod build‑id URIs
  * Windows: PDB GUID+Age
  * Apple: dSYM UUID
* **unwind_context**: register snapshot, preference flags (e.g., “prefer unwind tables over frame‑pointers”), OS/ABI hints.
* **deterministic_seed**: single source of truth for any randomized tie‑breakers or heuristics.

### Output

* **call_stack**: ordered vector of frames

  * `addr`, `symbol_id`, optional `file:line`, `symbol_resolution_confidence`, and `resolver` (which backend won).
* **replay_manifest**: `{ seed, env_knobs, symbol_bundle_pointer }` so you (or CI) can re‑run the exact same resolution later.

---

# Resolver abstraction (so CI can fan‑out)

Define a tiny interface and run resolvers in parallel; record who succeeded:

```ts
type Platform = "linux" | "windows" | "apple";

interface ResolveResult {
  symbol_id: string;       // stable id in your store
  file?: string;
  line?: number;
  confidence: number;      // 0..1
  resolver: string;        // e.g., "debuginfod", "dia", "dsymutil"
}

function resolve(address: string, platform: Platform, bundle_hint?: string): ResolveResult | null;
```

**Backends:**

* **Linux/ELF**: debuginfod (by build‑id), DWARF/unwind tables.
* **Windows**: DIA/PDB (by GUID+Age).
* **Apple**: dSYM/DWARF (by UUID), `atos`/`llvm-symbolizer` flow if desired.

---

# Deterministic ingest & hashing

* Parse incoming JSON → **canonicalize via JCS** → compute `sha256` → verify signature → only then proceed.
* Persist `{canonical_json, sha256, signature, received_at}` so downstream stages always pull the exact blob.

---

# Unwinding & symbolization pipeline (deterministic)

1. **Normalize modules** (match load addresses → build‑ids/GUIDs/UUIDs).
2. **Unwind** using the declared policy in `unwind_context` (frame pointers vs. EH/CFI tables).
3. For each PC:

   * **Parallel resolve** via resolvers (`debuginfod`, DIA/PDB, dSYM).
   * Pick the winner by **deterministic reducer**: highest `confidence`, then lexical tie‑break using `deterministic_seed`.
4. Emit frames with `symbol_id` (stable, content‑addressed if possible), and optional `file:line`.

---

# Telemetry & SLOs (what to measure)

* **replay_success_ratio** (golden ≥ **95%**) — same input → same output.
* **symbol_coverage_pct** (prod ≥ **90%**) — % of frames resolved to symbols.
* **verify_time_ms** (median ≤ **3000 ms**) — signature + hash + canonicalization + core steps.
* **resolver_latency_ms** per backend — for tuning caches and fallbacks.

---

# Trade‑offs (make them explicit)

* **On‑demand decompilation / function‑matching**

  * ✅ Higher confidence on stripped binaries
  * ❌ More CPU/latency; potentially leaks more symbol metadata (privacy)
* **Progressive fetch + partial symbolization**

  * ✅ Lower latency, good UX under load
  * ❌ Lower confidence on some frames; riskier explainability (false positives)

Pick per environment via `env_knobs` and record that in the `replay_manifest`.

---

# Minimal wire formats (copy/paste ready)

### Evidence tile (canonical, pre‑hash)

```json
{
  "evidence_version": 1,
  "platform": "linux",
  "arch": "x86_64",
  "fault_addr": "0x7f1a2b3c",
  "registers": { "rip": "0x7f1a2b3c", "rsp": "0x7ffd...", "rbp": "0x..." },
  "modules": [
    {"name":"svc","base":"0x400000","build_id":"a1b2c3..."},
    {"name":"libc.so.6","base":"0x7f...","build_id":"d4e5f6..."}
  ],
  "ts_unix_ms": 1739999999999
}
```

### Analyzer request

```json
{
  "signed_evidence_tile": {
    "jcs_json": "<the exact JCS-canonical JSON above>",
    "sha256": "f1c2...deadbeef",
    "signature": "dsse/…"
  },
  "symbol_pointers": {
    "linux": ["debuginfod:buildid:a1b2c3..."],
    "windows": ["pdb:GUID+Age:..."],
    "apple": ["dsym:UUID:..."]
  },
  "unwind_context": {
    "prefer_unwind_tables": true,
    "stack_limit_bytes": 262144
  },
  "deterministic_seed": "6f5d7d1e-..."
}
```

### Analyzer response

```json
{
  "call_stack": [
    {
      "addr": "0x400abc",
      "symbol_id": "svc@a1b2c3...:main",
      "file": "main.cpp",
      "line": 127,
      "symbol_resolution_confidence": 0.98,
      "resolver": "debuginfod"
    }
  ],
  "replay_manifest": {
    "seed": "6f5d7d1e-...",
    "env_knobs": { "progressive_fetch": true, "max_resolvers": 3 },
    "symbol_bundle_pointer": "bundle://a1b2c3.../svc.sym"
  }
}
```

---

# How this plugs into Stella Ops

* **EvidenceLocker**: store the JCS‑canonical tile + DSSE signature + sha256.
* **AdvisoryAI**: consume symbol‑pinned stacks as first‑class facts for RCA, search, and explanations.
* **Attestor**: sign analyzer outputs (DSSE) and attach to Releases/Incidents.
* **CI**: on build, publish symbol bundles (ELF build‑id / PDB GUID+Age / dSYM UUID) to your internal stores; register debuginfod endpoints.
* **SLO dashboards**: show coverage, latency, and replay ratio by service and release.

---

# Quick implementation checklist

* [ ] JCS canonicalization + sha256 + DSSE verify gate
* [ ] Resolver interface + parallel fan‑out + deterministic reducer
* [ ] debuginfod client (ELF), DIA/PDB (Windows), dSYM/DWARF (Apple) adapters
* [ ] Unwinder with policy switches (frame‑ptr vs. CFI)
* [ ] Content‑addressed `symbol_id` scheme
* [ ] Replay harness honoring `replay_manifest`
* [ ] Metrics emitters + SLO dashboards
* [ ] Privacy guardrails (strip/leak‑check symbol metadata by env)

---

If you want, I can generate a tiny reference service (Go or C#) with: JCS canonicalizer, debuginfod lookup, DIA shim, dSYM flow, and the exact JSON contracts above so you can drop it into your build & incident pipeline.