fix(P30): temp dir isolation + forge-agnostic APIs + static-key override (P1-8, P1-9, S1)

---ci---
project: acdl
phase: 30
milestone: v1.8
status: execute
---/ci---

P1-8: run_platform.sh now emits adapter output to $WORK/tf (per-run temp
dir), not the committed terraform/spike/ directory. The committed
terraform/spike/*.tf files are removed — they were scratch artifacts.
Deploy workflow artifact upload path updated to /tmp/acdl_platform_run_v18/tf/.
P1-9: contract_ingestor.py now reads GITHUB_API_BASE env for forge-agnostic
API URLs. _forge_type() detects GitHub vs Gitea. Search URL is branched
(GitHub uses /search/issues, Gitea uses /repos/{owner}/{repo}/issues).
S1: Deploy workflow configure-aws-credentials step restructured as a single
conditional step. OIDC when no static key (role-to-assume), static-key
when ACDL_AWS_ACCESS_KEY_ID present (access-key-id/secret-access-key inputs).
Both deploy workflows remain byte-identical.

Tests: +8 (292 -> 300). All pass. run_platform.sh --check-only green.

core/lambda/contract_ingestor.py

@@ -24,6 +24,9 @@ import boto3
 TABLE_NAME = os.environ.get("CONTRACTS_TABLE", "acdl-contracts")
 GITHUB_TOKEN_SECRET_ID = os.environ.get("GITHUB_TOKEN_SECRET_ID", "acdl/github-token")
 PLATFORM_REPO = os.environ.get("PLATFORM_REPO", "acdl/acdl")
+# P1-9: Forge-agnostic API base URL. Defaults to GitHub; set GITHUB_API_BASE
+# to a Gitea API root (e.g. https://git.cloudinit.dev/api/v1) for Gitea.
+GITHUB_API_BASE = os.environ.get("GITHUB_API_BASE", "https://api.github.com")
 
 _dynamodb = None
 _secrets_client = None
@@ -47,6 +50,43 @@ def _iso8601_now():
     return datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
 
 
+def _forge_type():
+    """P1-9: Detect whether the API base is GitHub or Gitea.
+
+    Gitea API roots contain '/api/v1'; GitHub's is 'api.github.com'.
+    """
+    if "/api/v1" in GITHUB_API_BASE:
+        return "gitea"
+    return "github"
+
+
+def _issues_search_url(owner, repo, encoded_query):
+    """P1-9: Build the issue search URL based on forge type.
+
+    GitHub uses /search/issues?q=...; Gitea uses /repos/{owner}/{repo}/issues?...
+    with query params (no /search/issues endpoint).
+    """
+    if _forge_type() == "gitea":
+        return (
+            f"{GITHUB_API_BASE}/repos/{owner}/{repo}/issues"
+            f"?state=open&type=issues&q={encoded_query}"
+        )
+    return (
+        f"{GITHUB_API_BASE}/search/issues?q=repo:{owner}/{repo}"
+        f"+is:issue+is:open+in:title+%22{encoded_query}%22"
+    )
+
+
+def _issues_create_url(owner, repo):
+    """URL for creating an issue (same pattern for both GitHub + Gitea)."""
+    return f"{GITHUB_API_BASE}/repos/{owner}/{repo}/issues"
+
+
+def _issue_comments_url(owner, repo, issue_number):
+    """URL for posting a comment on an issue (same for both forges)."""
+    return f"{GITHUB_API_BASE}/repos/{owner}/{repo}/issues/{issue_number}/comments"
+
+
 def _submit_contract(payload):
     consumer_repo = payload["consumerRepo"]
     contract_id = payload["contractId"]
@@ -105,10 +145,7 @@ def _report_error(payload):
     # Check for an existing open issue with the same title (idempotency)
     # URL-encode the contract_id to prevent search-query injection (P1-1).
     encoded_contract_id = urllib.parse.quote(contract_id, safe="")
-    search_url = (
-        f"https://api.github.com/search/issues?q=repo:{owner}/{repo}"
-        f"+is:issue+is:open+in:title+%22{encoded_contract_id}%22"
-    )
+    search_url = _issues_search_url(owner, repo, encoded_contract_id)
     req = urllib.request.Request(search_url)
     req.add_header("Authorization", f"token {github_token}")
     req.add_header("Accept", "application/vnd.github+json")
@@ -146,7 +183,7 @@ _This issue was auto-created by the ACDL platform Lambda (D-055). The consumer's
     if existing:
         # Comment on the existing issue
         issue_number = existing[0]["number"]
-        url = f"https://api.github.com/repos/{owner}/{repo}/issues/{issue_number}/comments"
+        url = _issue_comments_url(owner, repo, issue_number)
         data = json.dumps({"body": body}).encode()
         req = urllib.request.Request(url, data=data, method="POST")
         req.add_header("Authorization", f"token {github_token}")
@@ -160,7 +197,7 @@ _This issue was auto-created by the ACDL platform Lambda (D-055). The consumer's
         }
     else:
         # Create a new issue
-        url = f"https://api.github.com/repos/{owner}/{repo}/issues"
+        url = _issues_create_url(owner, repo)
         data = json.dumps({
             "title": title,
             "body": body,