feat: add 12 mega-repo MCP-unique tasks (compiler-toolchain + mozilla-firefox)

Add 8 compiler-toolchain tasks (LLVM/GCC, IDs 101-108) and 4 mozilla-firefox
tasks (IDs 109-112) targeting the largest public repos not yet in CCB.

New repo sets:
- compiler-toolchain: sg-evals/llvm-project--a8f3c97d, sg-evals/gcc--96dfb333
- mozilla-firefox: sg-evals/firefox--871325b8

Tasks span 6 MCP suites: domain, crossrepo_tracing, onboarding, platform,
security, migration, incident, and the new ccb_mcp_crossrepo suite.

Each task has full file set (task.toml, instruction.md, instruction_mcp.md,
3 Dockerfiles, eval.sh, test.sh, task_spec.json, oracle_answer.json,
oracle_checks.py, sgonly_verifier_wrapper.sh).

Also updates 5 K8s doc-gen tasks (sg-benchmarks -> sg-evals mirror names),
mirror_creation_manifest.json (101 mirrors), and docs counts (222 total tasks).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sjarmak

AGENTS.md

@@ -4,7 +4,7 @@ This file is the operational quick-reference for benchmark maintenance.
 `CLAUDE.md` mirrors this file.
 
 ## Benchmark Overview
-8 SDLC phase suites + 6 MCP-unique suites. SDLC tasks measure code quality
+8 SDLC phase suites + 10 MCP-unique suites. SDLC tasks measure code quality
 across phases: build, debug, design, document, fix, secure, test, understand.
 MCP-unique tasks measure org-scale cross-repo discovery and retrieval.
 See `README.md` for the full suite table and `docs/TASK_CATALOG.md` for

CLAUDE.md

@@ -4,7 +4,7 @@ This file is the operational quick-reference for benchmark maintenance.
 `AGENTS.md` mirrors this file.
 
 ## Benchmark Overview
-8 SDLC phase suites + 8 MCP-unique suites (6 active, 2 deferred). SDLC tasks
+8 SDLC phase suites + 10 MCP-unique suites. SDLC tasks
 measure code quality across phases: build, debug, design, document, fix,
 secure, test, understand. MCP-unique tasks measure org-scale cross-repo
 discovery and retrieval.

benchmarks/ccb_document/k8s-apiserver-doc-gen-001/environment/Dockerfile.sg_only

@@ -4,7 +4,7 @@
 
 FROM golang:1.23-bookworm
 
-ENV SOURCEGRAPH_REPO_NAME=sg-evals/kubernetes--stripped
+ENV SOURCEGRAPH_REPO_NAME=sg-evals/kubernetes--8c9c67c0
 
 ENV DEBIAN_FRONTEND=noninteractive
 

benchmarks/ccb_document/k8s-apiserver-doc-gen-001/instruction_mcp.md

@@ -2,9 +2,9 @@
 
 **Local source files are not present.** Your workspace does not contain source code. You **MUST** use Sourcegraph MCP tools to discover, read, and understand code before making any changes.
 
-**Target Repository:** `github.com/sg-evals/kubernetes--stripped`
-- Use `repo:^github.com/sg-evals/kubernetes--stripped$` filter in keyword_search
-- Use `github.com/sg-evals/kubernetes--stripped` as the `repo` parameter for go_to_definition/find_references/read_file
+**Target Repository:** `github.com/sg-evals/kubernetes--8c9c67c0`
+- Use `repo:^github.com/sg-evals/kubernetes--8c9c67c0$` filter in keyword_search
+- Use `github.com/sg-evals/kubernetes--8c9c67c0` as the `repo` parameter for go_to_definition/find_references/read_file
 
 
 ## Required Workflow
@@ -67,7 +67,7 @@ If MCP search returns no results:
 
 # Task: Kubernetes API Server Architecture and Extension Guide
 
-**Repository:** github.com/sg-evals/kubernetes--stripped (mirror of kubernetes/kubernetes) (stripped snapshot)
+**Repository:** github.com/sg-evals/kubernetes--8c9c67c0 (mirror of kubernetes/kubernetes) (stripped snapshot)
 **Output:** Write your document to `/workspace/documentation.md`
 
 ## Objective

benchmarks/ccb_document/k8s-apiserver-doc-gen-001/task.toml

@@ -7,7 +7,7 @@ license = "Apache-2.0"
 
 [task]
 id = "k8s-apiserver-doc-gen-001"
-repo = "sg-evals/kubernetes--stripped"
+repo = "sg-evals/kubernetes--8c9c67c0"
 category = "architecture_doc"
 language = "go"
 difficulty = "hard"

benchmarks/ccb_document/k8s-applyconfig-doc-gen-001/environment/Dockerfile.sg_only

@@ -4,7 +4,7 @@
 
 FROM golang:1.23-bookworm
 
-ENV SOURCEGRAPH_REPO_NAME=sg-evals/kubernetes--stripped
+ENV SOURCEGRAPH_REPO_NAME=sg-evals/kubernetes--8c9c67c0
 
 ENV DEBIAN_FRONTEND=noninteractive
 

benchmarks/ccb_document/k8s-applyconfig-doc-gen-001/instruction_mcp.md

@@ -2,9 +2,9 @@
 
 **Local source files are not present.** Your workspace does not contain source code. You **MUST** use Sourcegraph MCP tools to discover, read, and understand code before making any changes.
 
-**Target Repository:** `github.com/sg-evals/kubernetes--stripped`
-- Use `repo:^github.com/sg-evals/kubernetes--stripped$` filter in keyword_search
-- Use `github.com/sg-evals/kubernetes--stripped` as the `repo` parameter for go_to_definition/find_references/read_file
+**Target Repository:** `github.com/sg-evals/kubernetes--8c9c67c0`
+- Use `repo:^github.com/sg-evals/kubernetes--8c9c67c0$` filter in keyword_search
+- Use `github.com/sg-evals/kubernetes--8c9c67c0` as the `repo` parameter for go_to_definition/find_references/read_file
 
 
 ## Required Workflow
@@ -67,7 +67,7 @@ If MCP search returns no results:
 
 # Task: Kubernetes Server-Side Apply Configuration Guide
 
-**Repository:** github.com/sg-evals/kubernetes--stripped (mirror of kubernetes/kubernetes) (stripped snapshot)
+**Repository:** github.com/sg-evals/kubernetes--8c9c67c0 (mirror of kubernetes/kubernetes) (stripped snapshot)
 **Output:** Write your document to `/workspace/documentation.md`
 
 ## Objective

benchmarks/ccb_document/k8s-applyconfig-doc-gen-001/task.toml

@@ -7,7 +7,7 @@ license = "Apache-2.0"
 
 [task]
 id = "k8s-applyconfig-doc-gen-001"
-repo = "sg-evals/kubernetes--stripped"
+repo = "sg-evals/kubernetes--8c9c67c0"
 category = "architecture_doc"
 language = "go"
 difficulty = "hard"

benchmarks/ccb_document/k8s-clientgo-doc-gen-001/environment/Dockerfile.sg_only

@@ -4,7 +4,7 @@
 
 FROM golang:1.23-bookworm
 
-ENV SOURCEGRAPH_REPO_NAME=sg-evals/kubernetes--stripped
+ENV SOURCEGRAPH_REPO_NAME=sg-evals/kubernetes--8c9c67c0
 
 ENV DEBIAN_FRONTEND=noninteractive
 

benchmarks/ccb_document/k8s-clientgo-doc-gen-001/instruction_mcp.md

@@ -2,9 +2,9 @@
 
 **Local source files are not present.** Your workspace does not contain source code. You **MUST** use Sourcegraph MCP tools to discover, read, and understand code before making any changes.
 
-**Target Repository:** `github.com/sg-evals/kubernetes--stripped`
-- Use `repo:^github.com/sg-evals/kubernetes--stripped$` filter in keyword_search
-- Use `github.com/sg-evals/kubernetes--stripped` as the `repo` parameter for go_to_definition/find_references/read_file
+**Target Repository:** `github.com/sg-evals/kubernetes--8c9c67c0`
+- Use `repo:^github.com/sg-evals/kubernetes--8c9c67c0$` filter in keyword_search
+- Use `github.com/sg-evals/kubernetes--8c9c67c0` as the `repo` parameter for go_to_definition/find_references/read_file
 
 
 ## Required Workflow
@@ -67,7 +67,7 @@ If MCP search returns no results:
 
 # Task: Kubernetes client-go Systems Guide
 
-**Repository:** github.com/sg-evals/kubernetes--stripped (mirror of kubernetes/kubernetes) (stripped snapshot)
+**Repository:** github.com/sg-evals/kubernetes--8c9c67c0 (mirror of kubernetes/kubernetes) (stripped snapshot)
 **Output:** Write your document to `/workspace/documentation.md`
 
 ## Objective