diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 83a8fe4..17e5842 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,7 +1,7 @@
 name: CI
 on:
   push:
-    branches: [main, "feat/**"]
+    branches: [main, "feat/**", "fix/**"]
   pull_request:
 permissions:
   contents: read
@@ -9,10 +9,10 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v7
         with:
           go-version: '1.27.1'
           cache: true
@@ -37,8 +37,8 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
         with:
           go-version: '1.27.1'
           cache: true
@@ -53,8 +53,8 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
         with:
           go-version: '1.27.1'
           cache: true
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7fc64ec..8410ff9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,8 +17,8 @@ jobs:
           - { goos: windows, goarch: arm64 }
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
         with:
           go-version: '1.27.1'
       - run: go mod download
diff --git a/.github/workflows/whythis-pr.yml b/.github/workflows/whythis-pr.yml
index e695357..253d1ad 100644
--- a/.github/workflows/whythis-pr.yml
+++ b/.github/workflows/whythis-pr.yml
@@ -30,10 +30,10 @@ jobs:
       COMMENT_ENABLED: ${{ (github.event_name == 'workflow_dispatch' && inputs.comment) || (github.event_name == 'pull_request' && vars.WHYTHIS_AUTO_COMMENT == 'true') }}
       RISK_THRESHOLD: ${{ inputs.risk_threshold || vars.WHYTHIS_RISK_THRESHOLD || '50' }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v7
         with:
           go-version: '1.27.1'
           cache: true
diff --git a/docs/harnesses.md b/docs/harnesses.md
index 871bab0..75164ab 100644
--- a/docs/harnesses.md
+++ b/docs/harnesses.md
@@ -2,16 +2,16 @@
 
 Harnesses interpret already-collected evidence. They are not evidence collectors and cannot promote their output to FACT.
 
-The table below records the upstream repository/source inspected during the initial implementation. The point is to make integration claims auditable rather than guessed.
+The table below records the upstream repository/source inspected during the initial implementation. The point is to make integration claims auditable rather than guessed. Pi repository provenance was refreshed on **2026-09-18** after its upstream ownership move.
 
 | ID | Official/current upstream inspected | Verified mechanism used | Notes |
 |---|---|---|---|
 | `codex` | `openai/codex` — `codex-rs/exec/src/cli.rs`, `exec_events.rs` | `codex exec --json --ephemeral --skip-git-repo-check -` | CLI source documents non-interactive exec, JSONL, ephemeral sessions and stdin prompt `-`. |
 | `claude-code` | `anthropics/claude-code` — release feed and `plugins/plugin-dev` hook docs | print mode with `--output-format stream-json` | Upstream also exposes hooks including PreToolUse/PostToolUse/Stop/Session lifecycle events. WhyThis uses one-shot synthesis, not hooks. |
 | `opencode` | `anomalyco/opencode` — `packages/web/src/content/docs/cli.mdx` | `opencode run --format json` | The former `opencode-ai/opencode` repository is archived; the active repository inspected is `anomalyco/opencode`. Docs also expose a headless `serve` backend. |
-| `pi` | `earendil-works/pi` — `packages/coding-agent/docs/rpc.md` | `pi --mode rpc --no-session` | Strict JSONL RPC over stdin/stdout; WhyThis sends a `prompt` command and consumes events until `agent_end`. The repository is the current destination of the former `badlogic/pi-mono` project. |
+| `pi` | `mitsuhiko/pi-mono` — `packages/coding-agent/docs/rpc.md` | `pi --mode rpc --no-session` | Strict JSONL RPC over stdin/stdout; WhyThis sends a `prompt` command and consumes events until `agent_end`. The current package is `@mariozechner/pi-coding-agent`; the upstream project has moved owners over time, so capability evidence points at the current canonical repository. |
 | `gemini` | `google-gemini/gemini-cli` — `docs/reference/configuration.md` | `gemini -p ... --output-format stream-json` | Upstream documents `json` and streaming `stream-json` non-interactive output. |
-| `aider` | `Aider-AI/aider` — `aider/args.py` and config docs | `aider --message-file <file> --yes-always` | `--message-file` is documented as send/process/exit. WhyThis runs synthesis in a temporary directory to isolate it from the analyzed repo. |
+| `aider` | `Aider-AI/aider` — `aider/website/docs/scripting.md` | `aider --message-file <file> --yes` | `--message-file` is documented as send/process/exit and `--yes` is the documented non-interactive confirmation flag. WhyThis runs synthesis in a temporary directory to isolate it from the analyzed repo. |
 | `goose` | `aaif-goose/goose` — `crates/goose-cli/src/cli.rs` and headless docs | `goose run --text ... --output-format stream-json --no-session` | CLI source defines text input, JSON/stream-JSON output and no-session automation mode. |
 | `cline` | `cline/cline` — `apps/cli/README.md`, `apps/cli/src/main.ts` | `cline --json <prompt>` | Current Cline CLI explicitly documents one-shot/headless operation and NDJSON output. |
 | `roo-code` | `RooCodeInc/Roo-Code` — `README.md` | installed-extension detection and prompt handoff | Upstream README states the extension was shut down on May 15, 2026. WhyThis does **not** invent a maintained headless CLI. |
@@ -27,7 +27,6 @@ For subprocess-based synthesis WhyThis creates a temporary working directory and
 
 Availability means the integration surface was detected locally; it does not mean provider credentials are configured.
 
-
 ## External adapters
 
 The built-ins are not a closed list. `pkg/harness` exposes the public `Adapter`, `Capabilities`, `AnalysisRequest` and `AnalysisResult` types so external Go modules can integrate additional harnesses without importing internal packages. See [`adapter-development.md`](adapter-development.md).
diff --git a/docs/research.md b/docs/research.md
index 3c49992..46668d8 100644
--- a/docs/research.md
+++ b/docs/research.md
@@ -16,4 +16,4 @@ The GitHub search did not reveal an established project with the exact WhyThis c
 2. Historical metrics/risk remain deterministic.
 3. GitHub discussion is evidence only when fetched and preserved with provenance.
 4. AI is a semantic interpreter behind a `--no-ai`-complete deterministic path.
-5. Symbol identity is not overclaimed: current support starts with pickaxe/text history, with language-aware identity tracking left for later work.
+5. Symbol identity is not overclaimed. The initial design used pickaxe/text history as the portable fallback; the current implementation also uses Go AST declarations and `git log -L` for Go symbols, while non-Go and deleted-symbol paths retain the textual fallback.
diff --git a/internal/harness/builtin.go b/internal/harness/builtin.go
index 4d3e803..bea82b6 100644
--- a/internal/harness/builtin.go
+++ b/internal/harness/builtin.go
@@ -19,7 +19,7 @@ func builtins() []Harness {
 		commandHarness{id: "opencode", binary: "opencode", integration: "process: opencode run --format json", structured: true, sources: []string{"anomalyco/opencode packages/web/src/content/docs/cli.mdx"}, args: func(_ string, p string) []string { return []string{"run", "--format", "json", p} }},
 		piHarness{},
 		commandHarness{id: "gemini", binary: "gemini", integration: "process: gemini -p + stream-json", structured: true, sources: []string{"google-gemini/gemini-cli docs/reference/configuration.md"}, args: func(_ string, p string) []string { return []string{"-p", p, "--output-format", "stream-json"} }},
-		commandHarness{id: "aider", binary: "aider", integration: "process: --message-file (one-shot)", structured: false, sources: []string{"Aider-AI/aider aider/args.py"}, args: func(f string, _ string) []string { return []string{"--message-file", f, "--yes-always"} }},
+		commandHarness{id: "aider", binary: "aider", integration: "process: --message-file (one-shot)", structured: false, sources: []string{"Aider-AI/aider aider/website/docs/scripting.md"}, args: func(f string, _ string) []string { return []string{"--message-file", f, "--yes"} }},
 		commandHarness{id: "goose", binary: "goose", integration: "process: goose run --text + stream-json", structured: true, sources: []string{"aaif-goose/goose crates/goose-cli/src/cli.rs"}, args: func(_ string, p string) []string {
 			return []string{"run", "--text", p, "--output-format", "stream-json", "--no-session"}
 		}},
@@ -34,7 +34,7 @@ type piHarness struct{}
 func (piHarness) ID() string { return "pi" }
 func (piHarness) Detect(ctx context.Context) (Capabilities, error) {
 	p, err := exec.LookPath("pi")
-	return Capabilities{ID: "pi", Available: err == nil, Executable: p, Integration: "JSONL RPC: pi --mode rpc --no-session", StructuredOutput: true, SessionProtocol: true, EvidenceSources: []string{"earendil-works/pi packages/coding-agent/docs/rpc.md"}}, nil
+	return Capabilities{ID: "pi", Available: err == nil, Executable: p, Integration: "JSONL RPC: pi --mode rpc --no-session", StructuredOutput: true, SessionProtocol: true, EvidenceSources: []string{"mitsuhiko/pi-mono packages/coding-agent/docs/rpc.md"}}, nil
 }
 func (piHarness) Analyze(ctx context.Context, req AnalysisRequest) (AnalysisResult, error) {
 	p, err := exec.LookPath("pi")
diff --git a/internal/harness/harness_test.go b/internal/harness/harness_test.go
index 1057689..7ff0292 100644
--- a/internal/harness/harness_test.go
+++ b/internal/harness/harness_test.go
@@ -2,6 +2,7 @@ package harness
 
 import (
 	"context"
+	"reflect"
 	"testing"
 )
 
@@ -11,6 +12,41 @@ func TestRegistryHasTenHarnesses(t *testing.T) {
 		t.Fatalf("expected 10 adapters, got %d", len(r.items))
 	}
 }
+
+func TestBuiltinHarnessContracts(t *testing.T) {
+	var aider commandHarness
+	var foundAider bool
+	for _, h := range builtins() {
+		if h.ID() != "aider" {
+			continue
+		}
+		var ok bool
+		aider, ok = h.(commandHarness)
+		if !ok {
+			t.Fatalf("aider adapter has unexpected type %T", h)
+		}
+		foundAider = true
+		break
+	}
+	if !foundAider {
+		t.Fatal("aider adapter not found")
+	}
+
+	got := aider.args("/tmp/prompt.md", "ignored")
+	want := []string{"--message-file", "/tmp/prompt.md", "--yes"}
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("aider args = %#v, want %#v", got, want)
+	}
+
+	piCaps, err := (piHarness{}).Detect(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(piCaps.EvidenceSources) != 1 || piCaps.EvidenceSources[0] != "mitsuhiko/pi-mono packages/coding-agent/docs/rpc.md" {
+		t.Fatalf("unexpected pi evidence sources: %#v", piCaps.EvidenceSources)
+	}
+}
+
 func TestExtractText(t *testing.T) {
 	got := extractText("{\"type\":\"x\",\"text\":\"hello\"}\n")
 	if got != "hello" {