Task: Remove the Milestone-Phase Notion

TASK-DESCRIPTION

Remove the project-milestone “phase” notion from the skeleton. An episode is the unit of progress; progress is a series of episodes, often with tasks discovered along the way. The “response phases” in prompts/01-contract.md section 4 (Clarification, Planning, Implementation, Verification, Correction) are a different concept and stay.

• Delete: PHASES.md
• Delete: tests/04-phase-parse.sh
• Modify: prompts/01-contract.md
• Modify: prompts/02-workflow.md
• Modify: prompts/03-conventions.md
• Modify: prompts/how-to-write-episodes.md
• Modify: prompts/episodes/01-episode-template.md
• Modify: prompts/episodes/02-episode-plan.md
• Modify: prompts/episodes/00-episodes.md
• Modify: README.md
• Modify: AGENTS.md
• Modify: scripts/status.sh
• Modify: scripts/site-condense.sh
• Modify: scripts/prompt-maturity.sh
• Modify: tests/00-skeleton.sh
• Modify: tests/09-prompt-contract.sh
• Modify: tests/10-prompt-validator.sh
• Modify: tests/12-status.sh
• Modify: documents/06-project-pages.md
• Modify: site.in/index.txt
• Modify: evals/05-acceptance-remains-human.md

The edit for each file:

• prompts/01-contract.md: remove the PHASES.md bullet from the section 7 canonical root files, and reword the section 2 row for prompts/episodes/02-episode-plan.md from “when work is planned by phase” to “when work is planned”.
• prompts/02-workflow.md: in section 4, drop “and phase state” from the sentence naming what the prompt-contract test validates.
• prompts/03-conventions.md: remove the “Keep PHASES.md current” rule from section 6.
• prompts/how-to-write-episodes.md: remove section 9 “Relationship to Phases” in full, then renumber the following sections (10 to 9, 11 to 10, 12 to 11, 13 to 12).
• prompts/episodes/01-episode-template.md: remove the optional EPISODE-PHASE field.
• prompts/episodes/02-episode-plan.md: rewrite as a flat suggested-episodes list with no “Phase 1 / Phase 2” grouping, no phase-order dependency rule, and no phase-and-letter naming.
• prompts/episodes/00-episodes.md: reword the index line for 02-episode-plan.md to drop “of the phases”.
• README.md: remove the PHASES.md line from the top-level map and from the Canonical Files list.
• AGENTS.md: drop PHASES.md from the state line, and drop “the current phase” from the make status description.
• scripts/status.sh: remove the block that prints == phase:, and reword the header comment.
• scripts/site-condense.sh: remove the phase.txt generation block.
• scripts/prompt-maturity.sh: drop PHASES.md from the durable-memory condition and from its description.
• tests/00-skeleton.sh: remove PHASES.md from FILES_REQUIRED.
• tests/09-prompt-contract.sh: remove check 7 (the PHASES.md validation) and its header mention; leave the remaining check numbers unchanged.
• tests/10-prompt-validator.sh: remove the FILE_PHASES variable and the three check-7 fixtures; reword the section comment.
• tests/12-status.sh: remove the PHASES.md fixture and the phase assertions; keep the TODO, log, and git assertions, with a phase-free TODO example.
• documents/06-project-pages.md: remove the “activity vs phase” passage and the site.out/phase.txt references.
• site.in/index.txt: drop “phases” from the status placeholder sentence.
• evals/05-acceptance-remains-human.md: reword the example task instruction to reference the TODO line instead of a phase line.

TASK-OUTPUT

• Report each deleted and modified file, and the make test result.
• End with the VERIFICATION: line.

TASK-CONTEXT

TASK-FILES

TASK-VERIFY

• Run: make test from the repository root.
• Expected: exit status 0.

OUTPUT: the deleted and modified files and the make test result, ending with the VERIFICATION: line.