Enforce per-task file restrictions in implement phase

[james-in-a-box]

Summary

Enforce per-task file restrictions from the planner during the implement phase. When the orchestrator spawns an implement agent, the gateway now restricts that agent's commits to only the files listed in its assigned tasks — preventing accidental cross-contamination in multi-agent (Tier 3) pipelines.

The enforcement follows a "guide, don't cage" philosophy per the issue design:

• Warn-then-block escalation for out-of-scope files
• Recursive directory expansion (dir/**) for sibling files
• Graceful fallback when files_affected is empty (no restriction)
• HITL escape hatch via egg-contract add-decision for legitimate out-of-scope files

Changes

• Gateway: Per-task file restriction enforcement in push handler (warn-then-block) and post_agent_commit.py for auto-commit filtering
• Gateway API: allowed_files parameter in /sessions/create with input validation
• Orchestrator: container_spawner.py extracts files_affected from contract tasks and passes them to the gateway when configuring agent sessions
• Tests: 250 tests covering core enforcement, edge cases, gap scenarios, and integration

Closes #912

Test plan

1. pytest gateway/tests/test_session_file_restrictions.py gateway/tests/test_session_file_restrictions_gaps.py gateway/tests/test_post_agent_commit.py gateway/tests/test_post_agent_commit_gaps.py gateway/tests/test_session_manager.py orchestrator/tests/test_container_spawner.py orchestrator/tests/test_container_spawner_gaps.py — all 250 tests pass
2. Review gateway enforcement logic in gateway.py (push handler per-task checks)
3. Review orchestrator integration in container_spawner.py (_compute_allowed_files)

Authored-by: egg

[james-in-a-box]

Autofix tracking

{"Lint/Python": 3, "Test/Unit Tests": 2}

[egg-reviewer]

No agent-mode design concerns.

This PR enforces per-task file restrictions at the gateway sidecar level — exactly where the agent-mode guidelines say constraints belong ("the sandbox is the constraint"). The agent's ability to explore, read files, and reason is unaffected; only commit/push of out-of-scope files is restricted. The implementation avoids all flagged anti-patterns:

• No pre-fetching: Lightweight file patterns passed via session metadata, not large diffs or content
• No structured output requirements: Enforcement is transparent at push time
• No post-processing pipelines: Gateway enforces directly, no agent output parsing
• Agent flexibility preserved: Graceful fallback when files_affected is empty, plus egg-contract request-file escape hatch for legitimate out-of-scope needs
• No direct LLM API calls: All changes are in gateway/orchestrator infrastructure with no Anthropic API usage

— Authored by egg

[egg-reviewer]

Review: Per-task file restrictions in implement phase

Thorough review of all changed files. The overall design is sound — the data flow from orchestrator through gateway session to push-time enforcement is well-structured. The test coverage is good. I have one blocking issue and several non-blocking concerns.

---

Blocking

1. warn_threshold parsing can crash the gateway (gateway/gateway.py:837)

warn_threshold = int(os.environ.get("EGG_TASK_FILE_WARN_THRESHOLD", "1"))

If EGG_TASK_FILE_WARN_THRESHOLD is set to a non-integer string (e.g., "true" or ""), this raises an unhandled ValueError inside the push handler. This will crash the request with a 500 error on every push that has out-of-scope files. Since this is inside a security-critical code path (push validation), it should be wrapped in a try/except with a sensible default.

Fix:

try:
    warn_threshold = int(os.environ.get("EGG_TASK_FILE_WARN_THRESHOLD", "1"))
except (ValueError, TypeError):
    warn_threshold = 1

---

Non-blocking

2. Warn counter incremented on rejected pushes (gateway/gateway.py:870-876)

When a push contains a mix of first-time files (warned) and repeat files (blocked), the code increments the warn counter for the new files before blocking the push. This means:

1. Push contains file A (new, warned) + file B (repeat, blocked) → push rejected
2. Next push with just file A → blocked immediately (counter was already incremented)

The agent never successfully pushed file A, yet it gets blocked on the next attempt. The counter should only be incremented if the push is going to succeed. Consider moving the counter increment into a second pass after confirming no files will be blocked:

# First pass: check if any files would be blocked
for f in out_of_scope:
    if warned_files.get(f, 0) >= warn_threshold:
        blocked_files_task.append(f)
# If blocked, return error without incrementing counters
if blocked_files_task:
    return make_error(...)
# Second pass: increment counters for warned files
for f in out_of_scope:
    warned_files[f] = warned_files.get(f, 0) + 1
    warned_files_task.append(f)

3. No size/count limit on allowed_files input (gateway/gateway.py:3437-3445)

The validation checks types but doesn't limit the number of entries or string lengths. A malicious or buggy caller could send thousands of long patterns. Consider adding:

• Max entries (e.g., 1000)
• Max string length per entry (e.g., 512 chars)

This isn't critical since the endpoint requires launcher_secret auth, but defense-in-depth is warranted for infrastructure code.

4. Documented escape hatch doesn't exist (sandbox/.claude/rules/environment.md:73)

The agent instructions tell coders to use egg-contract request-file --path <file> --reason <why> to request access to out-of-scope files. This subcommand does not exist — egg-contract only supports show, add-commit, update-notes, verify-criterion, add-decision, add-feedback, and agent lifecycle commands. Agents following this instruction will get an error and be stuck.

Either implement the subcommand or remove the reference. If it's planned for a follow-up, document it as such and provide an alternative workaround (e.g., using add-decision to ask the human).

5. PR description mentions nonexistent /pipelines/{id}/task-files endpoint

The PR summary says "New /pipelines/{id}/task-files endpoint for querying per-task file mappings" but this endpoint is not in the diff. The summary should be corrected to avoid confusion during review.

6. _compute_allowed_files only applies to "coder" role (container_spawner.py:106)

The function returns None for any non-"coder" role. If tester or documenter agents push files, they get no per-task restriction. This is consistent with the described design ("implement-phase coder agents"), but it means testers in Tier 3 parallel dispatch can push to any file without per-task constraints. Worth confirming this is intentional — testers typically need broader access, but the architecture doc should be explicit about this.

7. PhaseFileRestriction reuse semantics differ between push and post-agent paths

In the push path (gateway.py), the PhaseFileRestriction is constructed per-push. In post_agent_commit.py, it's also constructed per-invocation. This is fine, but the import fallback logic is duplicated between the two files (try phase_filter, then gateway.phase_filter, then None). Consider extracting a helper to reduce the surface area for import path drift.

— Authored by egg

[james-in-a-box]

Contract Verification: Issue #912 — Per-Task File Restrictions

Verdict: APPROVE

All 12 contract tasks across 5 phases verified. All 250 new tests pass. Implementation matches the contract specification.

---

Phase 1: Data Model and API Plumbing

task-1-1 (Session.allowed_files persistence) — VERIFIED

• allowed_files: list[str] | None = None added to Session dataclass (session_manager.py:247)
• _warned_files: dict[str, int] = {} initialized in __post_init__ (session_manager.py:249-253), transient
• to_dict_for_persistence() includes allowed_files when non-None, excludes _warned_files
• from_persistence() uses .get("allowed_files") → None default for backward compat

task-1-2 (allowed_files in /sessions/create) — VERIFIED

• Validation rejects non-list types and empty/non-string entries with 400 (gateway.py:3437-3445)
• None and omitted values handled correctly
• Stored on Session via register_session() call (gateway.py:3555-3568)

task-1-3 (GatewayClient.register_session) — VERIFIED

• allowed_files: list[str] | None = None parameter added (gateway_client.py:246)
• Conditionally included in POST payload when non-None (gateway_client.py:301-302)

Phase 2: Orchestrator Integration

task-2-1 (_compute_allowed_files) — VERIFIED

• Helper at container_spawner.py:85-142 with correct behavior:
  • Returns None for non-coder agents (line 106-107)
  • Returns None for missing plan_phase_id or empty phases (lines 109-110)
  • Computes union of files_affected from matching phase tasks (lines 123-127)
  • Returns None if collected files empty (lines 129-130)
  • Directory expansion: src/auth/login.py → adds src/auth/* (lines 134-140)
  • Glob patterns preserved without double-expansion
  • Result is sorted and deduplicated

task-2-2 (plan_phase_id threading) — VERIFIED

• spawn_agent_container() accepts allowed_files parameter (container_spawner.py:268)
• _spawn_and_wait() accepts both plan_phase_id and allowed_files (pipelines.py:4152-4153)
• plan_phase_id passed through to _compute_allowed_files() and stored in AgentExecution model

Phase 3: Gateway Enforcement

task-3-1 (Push handler warn-then-block) — VERIFIED

• Per-task file restriction check at gateway.py:795-913
• Checkpoint pushes bypass (if not is_checkpoint_push, line 802)
• Sessions without allowed_files unaffected (None/empty checks, lines 803-804)
• EGG_TASK_FILE_RESTRICTIONS_ENFORCE=true blocks immediately (lines 834-863)
• Default warn-then-block: first violation warns, second blocks (lines 865-913)
• Error includes blocked files, allowed patterns, and recovery hint
• Note: gateway/phase_filter.py listed as affected file but not modified — implementation reuses existing PhaseFileRestriction class without changes. This is acceptable as the class was already sufficient.

task-3-2 (Post-agent commit filtering) — VERIFIED

• Per-task filtering applied AFTER phase filtering with AND semantics (post_agent_commit.py:212-242)
• Out-of-scope files restored via git checkout -- <file> (lines 244-254)
• Structured logging with event_type="post_agent_task_filter" (lines 235-242)
• None allowed_files → no task filtering (falsy check, line 214)
• PhaseFileRestriction import with fail-open fallback (lines 216-221)

Phase 4: Tests

task-4-0 (Session persistence tests) — VERIFIED

• 7 tests in TestSessionAllowedFiles class (test_session_manager.py:1692-1810)
• Covers: round-trip, None not persisted, backward compat, _warned_files init/not persisted

task-4-1 (Push validation tests) — VERIFIED

• 15 tests in test_session_file_restrictions.py covering: allowed pass, disallowed warn-then-block, strict mode, checkpoint bypass, None/empty fallback, glob patterns, directory-sibling expansion, recursive fnmatch matching
• 25 gap tests in test_session_file_restrictions_gaps.py covering: blocked priority, path normalization, warned_files lifecycle, threshold variants, glob variants

task-4-2 (Post-agent commit tests) — VERIFIED

• 4 tests in TestAutoCommitTaskFiltering (test_post_agent_commit.py:568-700)
• 5 gap tests in test_post_agent_commit_gaps.py covering: combined phase+task filtering, import fallback, empty allowed_files, restore failure
• Covers: files outside restored, files inside committed, None = no filtering, logging verified

task-4-3 (Orchestrator spawner tests) — VERIFIED

• 13 tests in TestComputeAllowedFiles (test_container_spawner.py:687-816)
• 2 tests in TestSpawnerPassesAllowedFiles (test_container_spawner.py:818-854)
• 9 gap tests in test_container_spawner_gaps.py
• Covers: union, dir expansion, empty→None, non-coder→None, non-implement→None, glob preservation, deduplication, sorting

Phase 5: Documentation

task-5-1 (Plan template documentation) — VERIFIED

• files: as enforcement boundary documented (docs/templates/plan.md:97-101)
• Guidance on generous listing including config files (lines 115-124)
• Glob usage documented (lines 109-110, 119-120)
• Recursive directory expansion via fnmatch documented (lines 105-108)
• Empty files = no restriction documented (lines 112-113)

---

Test Results

All 250 tests pass (pytest ... -v → 250 passed in 9.53s). Full suite (7084 tests) passed per integrator output.

Minor Observations (Non-blocking)

1. gateway/phase_filter.py listed in task-3-1's files_affected but not modified. The existing PhaseFileRestriction class was reused as-is — this is a contract metadata inaccuracy, not an implementation gap.
2. PR description mentions a /pipelines/{id}/task-files endpoint, but this endpoint does not exist in the codebase and is not required by the contract.

— Authored by egg

[james-in-a-box]

Addressed all feedback from the review. Here's a summary of changes in e7fd56c:

1. (Blocking) warn_threshold parsing — Wrapped in try/except with fallback to default of 1.

2. Warn counter increment order — Restructured to two-pass approach: first classify files as blocked or warned, then only increment counters if no files are blocked. This prevents files from being incorrectly marked as "warned" on a rejected push.

3. allowed_files input validation limits — Added max 1000 entries and max 512 characters per entry.

4. Nonexistent egg-contract request-file — Replaced with egg-contract add-decision as the escape hatch, which is an existing subcommand.

5. PR description — Corrected to remove references to the nonexistent /pipelines/{id}/task-files endpoint and egg-contract request-file.

6. Non-coder role exclusion — This is intentional by design. Per-task file restrictions apply only to implement-phase coder agents. Testers need broader file access to write test files covering multiple areas, and documenters need to update docs referencing code across the codebase. The _compute_allowed_files docstring makes this explicit.

7. Duplicated import fallback — Extracted _import_phase_filter() helper in post_agent_commit.py to eliminate the duplicated try/except import chain.

All 250 tests pass. Linter clean.

— Authored by egg

[james-in-a-box]

Lint Check Investigation: F821 False Positive

I've investigated the failing Python lint check reporting F821 Undefined name 'is_checkpoint_push' at gateway/gateway.py:805.

Analysis

The error appears to be a false positive or caching issue:

1. Variable is properly defined: is_checkpoint_push is defined at line 571 within the git_push() function
2. All usages are in scope: Lines 578, 623, 750, 802, and 935 all use this variable within the same function
3. Local checks pass: ruff check, make lint-python, and Python AST parsing all succeed locally on the exact commit (e7fd56c) that CI claims is failing
4. Line number mismatch: CI reports line 805 as having if not is_checkpoint_push, but line 805 is actually a comment. The actual conditional is on line 802.

Code Structure

def git_push() -> tuple[Response, int] | Response:  # Line 489
    ...
    is_checkpoint_push = branch == CHECKPOINT_BRANCH  # Line 571 - DEFINITION
    ...
    if is_checkpoint_push or is_checkpoint_repo(...):  # Line 578 - usage 1
    ...
    if not is_checkpoint_push:  # Line 623 - usage 2
    ...
    if session_role and changed_files and not is_checkpoint_push:  # Line 750 - usage 3
    ...
    if not is_checkpoint_push and hasattr(g, "session") and g.session:  # Line 802 - usage 4
    ...
    if session_phase and not is_checkpoint_push:  # Line 935 - usage 5

All usages are within the function scope where the variable is defined.

Recommendation

This appears to be either:

• A ruff caching issue in CI
• A false positive from ruff's AST analyzer
• A transient CI environment issue

Since the code is correct and passes all local checks, I recommend:

1. Re-running the workflow to see if it's transient
2. If it persists, filing a bug report with ruff with this specific case

— Authored by egg

[james-in-a-box]

Update: Potential CI/Ruff Version Issue

After further investigation, I've confirmed:

• The code structure is correct and follows Python scoping rules
• All local checks pass (ruff 0.15.2)
• The file has no encoding or line ending issues
• The line number in the CI error (805) doesn't match the actual line with the conditional (802), suggesting a 3-line offset in error reporting

Next Steps

This appears to be a genuine tool/CI issue rather than a code problem. Options:

1. Wait for main to update: If this feature branch is behind main, rebasing might resolve dependency/version mismatches
2. Force ruff version: Pin ruff to a specific version in CI that matches local (0.15.2)
3. Investigate CI environment: Check if CI is caching an old version of dependencies

I've pushed an empty commit to trigger a new CI run. If it continues to fail, this will need human review to determine if it's a CI configuration issue.

— Authored by egg

[james-in-a-box]

egg is investigating the Lint check failure...

• Python

[james-in-a-box]

Autofix: Human Input Needed

The following checks could not be fixed automatically after multiple attempts:

Check	Attempts	Logs
Lint / Python	3/3	View

Please investigate manually or push a fix.

— Authored by egg

[james-in-a-box]

egg is resolving merge conflicts for this PR...

[james-in-a-box]

Conflict Resolution Summary

Resolved merge conflicts with main:

File	Category	Resolution
gateway/README.md	Additive	Both sides modified the POST /sessions/create API docs. PR added allowed_files? param; main made repos[] optional and added a note about local mode. Combined both: repos[]? + allowed_files? + both description lines.

Auto-merged files (no conflicts):

• docs/guides/sdlc-pipeline.md — clean merge
• gateway/gateway.py — clean merge (reformatted via ruff format to fix merge-induced formatting drift)
• orchestrator/routes/pipelines.py — clean merge
• sandbox/egg_lib/orch_cli.py — clean merge

Verification:

• ruff check — passed
• ruff format — passed (pre-existing issue in test_file_request.py not touched by this merge)
• All 263 PR-specific tests pass
• Full gateway suite: 1716 passed, 5 skipped

— Authored by egg

[james-in-a-box]

egg conflict resolution completed. View run logs

[james-in-a-box]

egg is investigating the Lint check failure...

• Python

[james-in-a-box]

Autofix: Human Input Needed

The following checks could not be fixed automatically after multiple attempts:

Check	Attempts	Logs
Lint / Python	3/3	View

Please investigate manually or push a fix.

— Authored by egg

[james-in-a-box]

egg is resolving merge conflicts for this PR...

[james-in-a-box]

Conflict Resolution Summary

Resolved merge conflicts with main:

File	Category	Resolution
gateway/gateway.py	Additive	Included both validation blocks — PR's allowed_files validation and main's local_only_repos validation are independent input validators in the session creation endpoint

Additional fix: Applied ruff format to gateway/tests/test_file_request.py (pre-existing formatting issue from main, not related to the conflict).

Verification:

• make lint — passes
• All 263 PR-related tests pass (test_session_file_restrictions, test_session_file_restrictions_gaps, test_post_agent_commit, test_post_agent_commit_gaps, test_session_manager, test_container_spawner, test_container_spawner_gaps)
• test_file_request.py (36 tests) — passes after formatting fix

No concerns — the conflict was purely additive (both sides added different validation blocks to the same location in the session creation endpoint). No semantic overlap.

— Authored by egg

[james-in-a-box]

egg conflict resolution completed. View run logs

[egg-reviewer]

Re-review of delta since 8d0e9c0 — no agent-mode design concerns.

The PR-authored changes since my last review are:

1. Security fixes (e6ebfae): File exceptions moved after check_file_restrictions so HITL bypass cannot circumvent protected-file enforcement; path traversal validation added to request_file_create; per-task allowed_files check added to the escape hatch; logging moved inside the lock in FileRequestManager; environment.md updated to reference egg-orch request-file instead of the old egg-contract add-decision escape hatch.
2. Formatting fix (e0b5f5c): ruff format applied to test_file_request.py.
3. Merge commits: Two merges from main (local-only repos, SIGTERM handler, ADR cleanup) — no PR-authored changes.

All changes remain well-aligned with agent-mode design principles:

• Enforcement stays at the gateway/sandbox level, not in prompts
• The escape hatch (egg-orch request-file) is agent-initiated HITL — the agent decides when to request access
• No pre-fetching, structured output requirements, or direct LLM API calls introduced

— Authored by egg

[james-in-a-box]

egg agent-mode-design completed. View run logs

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[james-in-a-box]

Contract Verification (Re-review)

Incremental review of changes since commit 8d0e9c0.

Delta Since Last Review

Only 2 new commits since last review:

• d8ef3c81 — Merge of origin/main (conflict resolution in gateway/gateway.py)
• e0b5f5c6 — Formatting fix in gateway/tests/test_file_request.py

Neither commit introduces new functionality or modifies contract-relevant logic. The merge resolved additive conflicts cleanly, and the formatting fix is cosmetic only.

Contract Task Verification

All 12 contract tasks across 5 phases verified:

Phase	Task	Status
1. Data Model	1-1: Session.allowed_files persistence	PASS
	1-2: /sessions/create validation	PASS
	1-3: GatewayClient.register_session()	PASS
2. Orchestrator	2-1: _compute_allowed_files() helper	PASS
	2-2: Thread plan_phase_id	PASS (see note)
3. Gateway	3-1: Push handler warn-then-block	PASS
	3-2: auto_commit_worktree() filtering	PASS
4. Tests	4-0: Session model persistence tests	PASS
	4-1: File restriction enforcement tests	PASS
	4-2: Post-agent commit filtering tests	PASS
	4-3: Orchestrator spawner tests	PASS
5. Docs	5-1: Plan template update	PASS

Note on Task 2-2: The contract specified that spawn_agent_container() should accept plan_phase_id and thread it through. The implementation instead computes allowed_files at the call site in pipelines.py via _compute_allowed_files(plan_phase_id=phase_id) and passes the result as allowed_files to spawn_agent_container(). This achieves the same functional outcome while keeping the spawner decoupled from contract details. The intent — making plan_phase_id available for file restriction computation — is fully satisfied.

Test Results

All PR-related tests pass (184 total):

• test_file_request.py: 36 passed
• test_session_file_restrictions.py + gaps: 43 passed
• test_post_agent_commit.py + gaps: 44 passed
• test_container_spawner.py + gaps: 61 passed

Regression Check

No regressions detected. Previously verified criteria remain satisfied after the merge and formatting fix.

Verdict

APPROVE — All contract acceptance criteria are met. The single delta since last review (merge + formatting fix) introduces no contract violations or regressions.

— Authored by egg

[james-in-a-box]

egg contract-verification completed. View run logs

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[egg-reviewer]

Re-review: Delta since 8d0e9c0 (commits e6ebfae, 754ed62, 86c49a5, d8ef3c8, e0b5f5c)

Reviewed all changes since my last review. The delta consists of one substantive commit (e6ebfae — security fixes for file access escape hatch), two merge-of-main conflict resolutions (86c49a5, d8ef3c8), one formatting fix (e0b5f5c), and one empty trigger commit (754ed62).

---

Previous feedback verification

All 3 blocking and 3 addressed non-blocking issues from the prior review have been properly fixed:

1. (Blocking) file_exceptions bypass check_file_restrictions — Fixed correctly. File exception filtering moved to AFTER check_file_restrictions (lines 753-771). Protected-file rules now see the full unmodified changed_files. The security comment at lines 723-727 clearly explains the layering. Test test_exception_does_not_bypass_protected_file_check confirms protected files are still blocked even with exceptions.

2. (Blocking) request_file_create missing allowed_files check — Fixed correctly. Per-task allowed_files check added at lines 4258-4265 using PhaseFileRestriction. Agents blocked by task scope can now use the escape hatch to request access. Tests in TestRequestFileAllowedFilesCheck cover this.

3. (Blocking) Path traversal validation on file_path — Fixed correctly. Validation at lines 4224-4229 rejects .., absolute paths (/), null bytes (\x00), and paths over 512 characters. Tests in TestRequestFilePathValidation cover all cases.

4. (Non-blocking) Contradictory escape hatch instructions — Fixed. environment.md lines 73-77 and 113-117 consistently reference egg-orch request-file commands. No remaining egg-contract add-decision references for the escape hatch.

7. (Non-blocking) resolve_request logging outside lock — Fixed. resolved_status and resolved_file_path captured inside the lock at lines 90-91 before logging at lines 93-99.

8. (Non-blocking) file_exceptions not applied in no-role per-task path — Fixed. File exceptions applied at lines 860-876 when changed_files is freshly fetched in the per-task restriction block.

---

Merge conflict resolutions

Two merges of main since the last review:

• 86c49a5 — README.md conflict (additive: both sides modified /sessions/create docs). Correctly combined repos[]? + allowed_files? + local_only_repos description.
• d8ef3c8 — gateway.py conflict (additive: both sides added validation blocks to session creation endpoint). Correctly included both allowed_files validation and local_only_repos validation.

Both are clean additive resolutions with no semantic overlap.

---

New observations (non-blocking)

No blocking issues found. The fixes are well-scoped and correct.

1. File exceptions bypass phase restrictions by design — but comment is incomplete (gateway.py:753)

The comment at line 753 says "files approved via HITL bypass agent-role and per-task restrictions (but NOT protected-file restrictions above)." However, file exceptions also bypass phase restrictions (check_phase_file_restrictions). In the main path, excepted files are removed from changed_files at line 771, before the phase restriction check at ~line 1036. In the no-role path, exceptions are applied at lines 1015-1034 before the phase check.

This appears intentional — protected file restrictions already block the most critical files (e.g., .egg-state/ for implementers). But the comment should mention that phase restrictions are also bypassed, so future maintainers understand the full scope of file_exceptions:

# Apply session file exceptions — files approved via HITL bypass agent-role,
# per-task, and phase restrictions (but NOT protected-file restrictions above).

2. request_file_create allows requests for phase-restricted files that are also protected files

If a file is phase-restricted (blocked by check_phase_file_restrictions) AND protected (blocked by check_file_restrictions), the agent can create a request for it (since request_file_create checks phase restrictions and finds it blocked). A human could approve it, and the file would be added to file_exceptions. But the push handler's check_file_restrictions (which runs before exceptions are applied) would still block it. The agent would see "request approved" but "push denied" — a confusing experience.

This is a narrow edge case (phase-restricted files that are also protected files are the same set in practice — .egg-state/ files). No action needed now, but worth documenting: file_exceptions granted for protected files are no-ops.

3. file_request_manager.py _next_request_id counter resets on gateway restart

The _counter global at line 20 starts at 0 on each gateway restart. Combined with the in-memory FileRequestManager (all requests also lost on restart), this means request IDs are not globally unique across restarts. Since the FileRequestManager state also resets, there's no collision risk, but it's worth noting that request_id values are not persistent identifiers — they're valid only within a single gateway process lifetime. This is consistent with the acknowledged limitation from the prior review (item #6).

— Authored by egg

[james-in-a-box]

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[james-in-a-box]

Addressed the non-blocking suggestions from the latest review in 366f81b:

1. Comment incomplete about phase restriction bypass — Agreed. Updated the comment at gateway.py:753 to accurately state that file exceptions bypass agent-role, per-task, AND phase restrictions (but NOT protected-file restrictions).

2. request_file_create allows requests for phase-restricted + protected files — Acknowledged. This is a narrow edge case (.egg-state/ files are both phase-restricted and protected). The file exception would be a no-op since check_file_restrictions runs before exceptions are applied. No code change needed, but the behavior is well-understood and documented by the existing security layering.

3. _next_request_id counter resets on restart — Acknowledged. Consistent with the existing FileRequestManager in-memory limitation (item #6 from a prior review). No collision risk since all state resets together.

All 7460 tests pass. Linter clean.

— Authored by egg

[egg-reviewer]

Re-review of delta since e0b5f5c — no agent-mode design concerns.

The single change (366f81b) is a comment correction in gateway.py clarifying that file_exceptions also bypass phase restrictions. No behavioral change, no impact on agent design.

— Authored by egg

[james-in-a-box]

egg agent-mode-design completed. View run logs

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[egg-reviewer]

Re-review: Delta since e0b5f5c (commit 366f81b)

Reviewed the single new commit since my last review.

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Delta

One commit: 366f81b — "Fix comment: file_exceptions also bypass phase restrictions"

The comment at gateway.py:752-753 was updated from:

# Apply session file exceptions — files approved via HITL bypass agent-role
# and per-task restrictions (but NOT protected-file restrictions above).

to:

# Apply session file exceptions — files approved via HITL bypass agent-role,
# per-task, and phase restrictions (but NOT protected-file restrictions above).

This is correct. File exceptions are applied before the phase restriction check at ~line 1036, so they do bypass phase restrictions. The updated comment accurately reflects all three restriction layers that are bypassed, and correctly notes that protected-file restrictions (via check_file_restrictions) are NOT bypassed since they run earlier at ~line 730.

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Previous feedback verification

All fixes from prior reviews remain intact:

1. check_file_restrictions runs before file exceptions — Confirmed at lines 723-748. Protected files are checked against the full unmodified changed_files.
2. Path traversal validation in request_file_create — Confirmed at lines 4226-4231. Rejects .., absolute paths, null bytes, and paths over 512 chars.
3. Per-task allowed_files check in request_file_create — Confirmed at lines 4258-4265.
4. resolve_request logging inside lock — Confirmed in file_request_manager.py:90-91. Values captured inside lock before logging.
5. warn_threshold try/except — Confirmed at lines 896-898.
6. Two-pass warn-then-block — Confirmed at lines 906-928.
7. prune_expired_sessions timeout — Confirmed: daemon=False, join timeout uses SESSION_END_CAPTURE_TIMEOUT + 5.
8. Worktree double-wait removed — Confirmed in worktree_manager.py.
9. environment.md escape hatch — Consistently references egg-orch request-file.
10. _import_phase_filter catches Exception — Confirmed in post_agent_commit.py:37,41.

CI

All checks passing (Lint, Unit Tests, Security Scan).

No new issues found

— Authored by egg

[james-in-a-box]

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[james-in-a-box]

Contract Verification (Re-review)

Scope: Incremental review of changes since commit e0b5f5c6fd95ff3be7294387b000b8f1dab70d5a.

Delta Since Last Review

One commit: 366f81b Fix comment: file_exceptions also bypass phase restrictions

Single change: a comment fix in gateway/gateway.py (line 753-754) correcting the description of what file_exceptions bypass. The old comment omitted "phase restrictions" from the list. The new comment is factually accurate — file exceptions remove files from changed_files before agent-role, per-task, AND phase restriction checks.

Verdict on delta: No regressions. Comment-only change is correct.

Full Contract Task Verification

All tasks verified against their acceptance criteria:

Task	Description	Status
1-1	Session.allowed_files with persistence + _warned_files	PASS — field exists, persists, backward-compat with None, _warned_files transient
1-2	/sessions/create accepts + validates allowed_files	PASS — accepts, stores, None/omitted handled, invalid entries rejected 400
1-3	GatewayClient.register_session() allowed_files	PASS — parameter accepted, conditionally included in POST payload
2-1	_compute_allowed_files() with dir expansion	PASS — union of files, dir/* expansion, None for non-coder/empty
2-2	Thread plan_phase_id through spawner	PASS (design variance) — see note below
3-1	Push handler warn-then-block enforcement	PASS — warn/block escalation, strict mode, checkpoint bypass, error details
3-2	Post-agent commit per-task filtering	PASS — files restored, phase first, structured logging, None bypass
4-0	Session model persistence tests	PASS — 7 tests covering round-trip, backward compat, transient state
4-1	Push validation tests	PASS — 18 tests covering all specified scenarios
4-2	Post-agent commit filtering tests	PASS — 4 tests covering restore, commit, None, logging
4-3	Spawner integration tests	PASS — 13 tests covering union, expansion, None cases, register_session
5-1	Plan template documentation	PASS — enforcement, generous listing, globs, recursive expansion, empty files

All 263 tests pass.

Note on Task 2-2 (Design Variance)

The acceptance criteria states spawn_agent_container() should accept plan_phase_id. In practice, _compute_allowed_files() is called at the call site in pipelines.py and the pre-computed allowed_files is passed to spawn_agent_container() instead. plan_phase_id is threaded through _spawn_and_wait() for AgentExecution tracking (line 4337). The functional outcome is identical — per-task file restrictions reach the gateway correctly. This is a reasonable design choice that keeps the spawner focused on container management.

Verdict

APPROVE — All contract tasks are implemented, tested, and documented. The single change since last review is a correct comment fix with no functional impact.

Note: Top-level acceptance_criteria array in the contract is empty, so verify-criterion could not be used. Verification was done at the task level.

— Authored by egg

[james-in-a-box]

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