chore: remove pfix dependency (ticket-006)

[tom-sapletta-com]

Removes retired pfix tool from dependencies and [tool.pfix] config. Nothing imports pfix.

[ifuri-validator-agent]

Validator approval after policy checks for exact head 84ec78a14396410485a17fa6ceb1b188a2ea258c.

Ticket: ticket-006
Correlation ID: vql-pr-5-ticket-006-84ec78a143
Model: zai/glm-5.3
Reviewed diff chunks: 1
Advisory LLM verdict: APPROVE
Advisory summary: Reviewed all 1 diff chunk(s). Removes the retired pfix dev dependency and its [tool.pfix] configuration from pyproject.toml, along with governance scaffold files for ticket-006. Changes are minimal, match the stated intent (XS scope, no source changes, no public interface impact), and the required check mcp2vql passed.
Advisory findings: none
The LLM output above is advisory and was not used as the approval trust root.
Semantic review prerequisite: not_required; policy 676cb4516bbfed2a000e40b9b1b6e4a430ecc761ec546aeb53d721a1905cfdd7.

Actual PR impact radar

Exact range: dd1229fadf20a60ff21edd07c1937d3a136a4b89...84ec78a14396410485a17fa6ceb1b188a2ea258c
Change digest: ef19456ffc898e0198fde826afffcfc20737aa1690e8369c04187c209076a3f7
Score: 44/100 (M), estimated 57 min, split recommended: true
Affected services/components: repository-wide/unclassified

Machine-readable radar JSONL and SVG

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Merge will be attempted after this approval when explicitly authorized. ## Decision record (recomputable)

DECISION D-006-5603
TICKET ticket-006
HEAD_SHA 84ec78a14396410485a17fa6ceb1b188a2ea258c
CORRELATION_ID vql-pr-5-ticket-006-84ec78a143
ACTOR agent:ifuri-validator-agent[bot]
APPLIED_RULE P-CORE-015
INPUT author_login = "tom-sapletta-com"
INPUT observed_checks = ["mcp2vql=PASS"]
INPUT required_checks = ["mcp2vql"]
INPUT required_checks_source = "protected registry + GitHub applied rules (env/request)"
INPUT reviewer_login = "ifuri-validator-agent[bot]"
INPUT semantic_review_assessment = {"schema":"subactor.validator/semantic-review-assessment/v1","subject":{"repository":"autogrammar/vql","pull_request":5,"head_sha":"84ec78a14396410485a17fa6ceb1b188a2ea258c","base_sha":"dd1229fadf20a60ff21edd07c1937d3a136a4b89","diff_sha256":"0efd88221df1966245cc7114c79c2cc7826cc16e723084d88ca4dc4b62ebcdae"},"policy":{"policy_schema":"subactor.validator/semantic-review-policy/v1","policy_version":1,"policy_sha256":"676cb4516bbfed2a000e40b9b1b6e4a430ecc761ec546aeb53d721a1905cfdd7","required":false,"critical_paths":[],"observed_paths":["project/ticket-006/README.md","project/ticket-006/ai-devin-logs.txt","project/ticket-006/ai-devin.md","project/ticket-006/changelog.md","project/ticket-006/intent.json","project/ticket-006/preprompt.md","pyproject.toml"]},"grounding":"full-diff-not-per-finding-proof","execution_authority":false,"status":"not_required","reason":null,"review_sha256":null,"unresolved":[]}
INPUT superseded_checks = []
INPUT ticket_radar_receipt = {"schema":"subactor.ticket-radar/v1","base_sha":"dd1229fadf20a60ff21edd07c1937d3a136a4b89","head_sha":"84ec78a14396410485a17fa6ceb1b188a2ea258c","change_digest":"ef19456ffc898e0198fde826afffcfc20737aa1690e8369c04187c209076a3f7","score":44,"complexity":"M","estimated_minutes":57,"split_recommended":true,"services":[],"authority":"ADVISORY","promotion":"FORBIDDEN"}
VERDICT APPROVE AUTHORITY DETERMINISTIC
REJECTED REQUEST_CHANGES BECAUSE NO_UNSAFE_CHANGE_REASON_FOUND
ADVISORY llm_verdict = "APPROVE" MODEL "zai/glm-5.3"
ASSERT VERDICT_AUTHORITY != "ADVISORY"