2026 07 07 Developer 0100

🎯 Session Summary

I walked the Developer · Level 0100 (Frontend & Containers, ⚔️ Adventurer tier) slice as a learner: four 🟡 Medium main quests plus one 🟡 Medium side quest, in the exact order walk-plan.json selected. This is window 1 of 2 over an 8-quest level, so it is a rotating sample, not the whole level.

The sealed execute-engine evidence (walk-evidence.json — pre-computed and sealed by the workflow; I did not run or edit it) scored 4 of 5 quests and errored on the 1^st (Docker Container Fundamentals hit the 40-turn cap, claude exited 1, no verdict). Results split cleanly along a published-vs-draft fault line: the two maintained Docker quests are solid (Compose Orchestration 77 warn, Jekyll Component Refactoring 78 warn), while both draft: true Jekyll+Bootstrap quests fail hard when actually executed (Frontend Forests 55 fail, Dockering Jekyll with Bootstrap 5 32 fail). Verdict tally: 0 pass · 2 warn · 3 fail, average 60.5%. The headline for a maintainer: the container arc of this level teaches what it claims; the frontend arc is unfinished draft content that would stop a beginner cold, and the arc's own foundation quest currently has no evidence — it should be re-run with a higher turn budget.

🗺️ The Journey

#	Verdict	Quest (type)	Score	One-line takeaway
1	⚠️ no verdict	Docker Container Fundamentals: Images to Registries (main)	—	Engine hit the 40-turn cap while curling localhost:8080; unverified — read as well-formed but not tested.
2	⚠️ warn	Docker Compose Orchestration: Multi-Container Apps (main)	77	Genuinely strong and hands-on verified; one reproducible failure — --scale web=3 against a fixed host port.
3	❌ fail	Dockering Jekyll with Bootstrap 5 (main, draft)	32	Breaks at almost every step: docker-compose CLI absent, dir mismatch, gem-persistence crash, no front matter so Bootstrap never loads.
4	❌ fail	Frontend Forests: Building a Jekyll Site with Bootstrap (main, draft)	55	Accurate conceptual chapter, but the hands-on steps edit _includes/_layouts that don't exist in a stock jekyll new.
5	⚠️ warn	The Artisan's Forge: Refactoring Jekyll Theme Components (side)	78	Core content builds and behaves as described; missing the step that actually wires the Sass partial into shipped CSS.

🔬 Evidence

All statuses below are from commands the execute engine actually ran in the disposable sandbox (executed: true on every scored quest), quoted from walk-evidence.json / walk-evidence.md. Quest 1's row is reasoned — the engine produced no verdict for it.

1. Docker Container Fundamentals — no verdict (engine error) · reasoned

• The engine terminated with terminal_reason: max_turns (Reached maximum number of turns (40)) and claude exited 1; no dimension scores, no command list, no summary were produced. The transcript fragment shows it was mid-way through probing the environment (node --version, curl --version, docker compose version) and repeatedly trying curl -s http://localhost:8080 / wget -qO- http://localhost:8080/ — i.e. it ran out of budget waiting on a served container.
• Static read (reasoned, not tested): the source is well-formed — real, specific objectives (Images vs Containers, Writing a Dockerfile, Build & Run, Layers & Cache, Registries), 4 chapters, 16 fenced code blocks, 597 lines. Nothing in the source looks broken, but I did not verify any command — treat this quest as uncovered this run.

2. Docker Compose Orchestration — 77 warn · executed, ran 13/~8 runnable snippets (1✗)

Dimensions: commands 3 · accuracy 4 · completeness 4 · clarity 4 · structure 5 · safety 5. - ✅ docker compose up -d (Ch.1 web+redis) — "built web, pulled redis:7-alpine, created network+containers successfully." - ✅ Flask+redis app.py — "hitting / repeatedly returned incrementing counts (1, 2, 3) exactly as advertised." - ✅ Ch.2 custom networks — "docker network inspect confirmed redis only attached to backend network." - ✅ Named-volume persistence — "Wrote a row to Postgres, down (no -v) then up -d again: row was still present." - ✅ Ch.3 healthcheck + depends_on — "db reached 'Healthy' before web started." - ❌ Ch.3 docker compose up -d --scale web=3 — config/up succeeded, but scaling fails because the compose file publishes a fixed host port, so replicas 2–3 can't bind. Reproducible against the quest's own compose.yaml. - ~~ macOS brew install docker-compose path — reasoned (no macOS in a Linux sandbox). -- Windows/PowerShell path — skipped (no Windows env).

3. Dockering Jekyll with Bootstrap 5 — 32 fail · executed, ran 8/4 snippets (4✗)

Dimensions: commands 1 · accuracy 1 · completeness 1 · clarity 2 · structure 2 · safety 5. - ❌ docker-compose run jekyll jekyll new . — "docker-compose (hyphenated) is not installed: command not found." (modern Docker ships docker compose, with a space.) - ❌ cd my-jekyll-site — "No such file or directory — jekyll new . in the prior step creates [files in place], not a named subfolder." (step-to-step mismatch.) - ❌ index.html {% include head.html %} — "because the snippet has no YAML front matter, [Jekyll never processes the include]" → Bootstrap is never loaded on the rendered page, defeating the quest's whole purpose. - ❌ docker-compose up — container "crashes immediately" with a Bundler::GemNotFound — gems installed in the ephemeral run container don't persist into the up container. - ✅ Dockerfile builds; ✅ compose file parses (with obsolete version: warning); ✅ git init/add/commit; ✅ _includes/head.html created — but with placeholder sha384-xxx SRI hashes, unnecessary jQuery, and Bootstrap-4-isms.

4. Frontend Forests — 55 fail · executed, ran 17 items (4✗, 8✓, 1 skipped, 4 reasoned)

Dimensions: commands 2 · accuracy 3 · completeness 2 · clarity 3 · structure 3 · safety 5. - ❌ gem install jekyll bundler — "'ERROR: Gem::FilePermissionError'" on a fresh non-root user with system Ruby 3.2.3; the quest gives no --user-install/rbenv path. - ❌ Step 3 "Open your _includes/head.html" — "ls _includes → 'No such file or directory'." - ❌ Step 4 "Edit the _layouts/default.html" — "ls _layouts → 'No such file or directory'." Root cause: stock jekyll new uses the gem-based minima theme, so those files live inside the gem, not the project. - ❌ Liquid {# output a variable #} comment — "tested with the liquid gem … renders literally"; {# #} is not valid Liquid (should be {% comment %}). - ✅ The Chapter 9 conceptual material verified accurate: slugify/date filters, _data/ access, _site gitignored, theme-override precedence, include-with-params. - -- bundle exec jekyll serve skipped (needs network bundle install); several diagram/front-matter blocks reasoned as correct.

5. The Artisan's Forge (Jekyll Component Refactoring) — 78 warn · executed, ran 12/3 (0✗)

Dimensions: commands 4 · accuracy 4 · completeness 3 · clarity 4 · structure 3 · safety 5. - ✅ Every assembled variant built and behaved as described: nanobar enabled/disabled, top/bottom position, footer before/after, config toggles. - ✅ _nanobar.scss compiled via jekyll-sass-converter 3.1.0 — but only after the engine manually added a main.scss importing it; the quest never shows this step, so "Jekyll silently ignores unimported _sass partials" and the styling objective fails invisibly for a learner. - ✅ Config-guarded Liquid markup rendered exact expected HTML (role=progressbar, aria attrs); ✅ scroll <script> passed node --check.

🐞 Issues Found

Every issue cites an observed command result (§Evidence) or a quoted source line. These are for a later content pass — I changed no quest content.

• HIGH · frontend-docker · docker-compose CLI throughout — every docker-compose … command errors command not found; modern Docker is docker compose. Fix: migrate to the space form (or teach both + a version check).
• HIGH · frontend-docker · Step 2→3 directory mismatch — jekyll new . scaffolds in place, so the later cd my-jekyll-site fails. Fix: use jekyll new my-jekyll-site or drop the cd.
• HIGH · frontend-docker · gem persistence — docker-compose up crashes with Bundler::GemNotFound because gems from the ephemeral run step don't persist. Fix: RUN bundle install in the Dockerfile with build: ., or bundle-install in the compose command.
• HIGH · frontend-docker · index.html has no YAML front matter — Jekyll never processes {% include head.html %}, so Bootstrap never loads — the quest's core objective silently doesn't happen. Fix: add the ---\n--- front-matter fence.
• HIGH · frontend · gem install permission error — Gem::FilePermissionError stops Step 1 on a typical non-root setup. Fix: recommend rbenv/rvm or --user-install + PATH note.
• HIGH · frontend · edits _includes/_layouts that don't exist — verified absent under stock minima (gem theme). Fix: have learners bundle show minima and copy files locally first, or scaffold a theme that vendors them.
• HIGH · docker-compose-orchestration · Ch.3 --scale web=3 — reproducibly fails against the quest's own fixed host-port compose.yaml. Fix: use a port range (e.g. 8080-8082:5000) / drop the mapping, or add a caveat showing the fix.
• HIGH · jekyll-component-refactoring · Sass partial never wired in — _nanobar.scss is silently ignored until @import-ed from a front-matter'd main.scss; that step is missing, so the styling objective fails invisibly. Fix: add the import step.
• MEDIUM · frontend & frontend-docker · placeholder objectives — both open with the auto-seeded checklist ("Understand the core concepts introduced in this quest…") and the visible note "objectives auto-seeded during framework alignment." Violates the quest rubric's "no [placeholder]" / real-objectives requirement. Fix: write concrete outcomes (or keep draft: true until authored).
• MEDIUM · frontend-docker · Bootstrap 5 accuracy — data-toggle, .sr-only, .jumbotron, jQuery, and literal sha384-xxx SRI hashes are Bootstrap-4-era / broken. Fix: update to data-bs-*, .visually-hidden, drop jQuery, use real SRI hashes.
• MEDIUM · frontend · invalid {# #} Liquid comment — renders literally; not valid syntax. Fix: {% comment %}…{% endcomment %} or remove.
• MEDIUM · jekyll-component-refactoring · duplicate Resources section and two never-taught bonus objectives (step animation, CI validation). Fix: de-dupe; move untaught bonuses to a clearly-optional note.
• LOW · docker-compose-orchestration · macOS brew/colima symlink and the .env vs env_file distinction — worth a clarifying sentence each (per engine recs).
• LOW · frontend-docker · obsolete version:'3' key, unused Dockerfile, missing footer.html, index.markdown build conflict — cleanup items from the engine recs.

🔗 Chain Continuity

Reading the five sources in plan order, as a learner would, this "slice" is really two disjoint sub-arcs stapled together by level code, not one linked path:

• The container arc (quests 1→2) is a genuine chain. container-fundamentals declares unlocks_quests: /quests/0100/docker-compose-orchestration/, and quest 2 lists quest 1 as a required_quest and names it in its knowledge prerequisites ("Completion of Container Fundamentals"). Quest 2's hands-on evidence confirms it builds cleanly on that foundation (single containers → multi-service stacks). But the foundation itself has no machine evidence this run — quest 1 errored at the turn cap — so I can only vouch for the link, not the foundation. It should be re-run with a larger --max-turns.

• The frontend arc (quests 3, 4) does not connect to anything. Neither frontend-docker nor frontend declares any quest_dependencies (both have empty required/recommended/unlocks), both are draft: true, and both carry the same auto-seeded placeholder objectives. They also overlap heavily — both build "a Jekyll site + Bootstrap 5," one via Docker and one via local Ruby — and both fail in the same fundamental way (the minima gem theme has no local _includes/_layouts, and Bootstrap is never actually wired in). A learner arriving from the container arc has no signposted route into them, and if they did arrive, they'd hit a wall at the first hands-on step.

• The side quest (5) exposes a real prerequisite gap: jekyll-component-refactoring recommends /quests/0100/frontend-docker/ as prep and assumes a working Jekyll theme with local _includes/_layouts and a Sass pipeline. But its recommended prerequisite (frontend-docker, score 32) never produces that state — it doesn't even get Bootstrap onto the page. So the one quest that assumes "you already have a themed Jekyll site" is gated behind the two quests least able to give a beginner one. The side quest itself is the strongest-authored of the three Jekyll quests (78), which underlines the inversion.

Net: as a learning path for a Developer at this tier, the container half holds together and the frontend half does not. The two draft: true quests are the clear priority — either finish them (real objectives, docker compose CLI, front matter, gem-persistence, theme-file reality) or keep them unpublished so learners don't hit them; and the foundational Docker quest needs a re-run to earn a verdict.

🧠 Reasoning & Method

• Mode: execute, in the disposable runner sandbox. Evidence was sealed by the workflow (walk-evidence.json + .md) before I ran; I consumed it verbatim and did not re-run the engine, edit the evidence, or hand-write any number. Per the skill, I cannot authenticate the engine's child processes from my Bash tool, so re-running was neither attempted nor possible.
• What I ran vs. reasoned: I ran no quest commands myself — all passed/failed statuses come from the sealed engine run (every scored quest reports executed: true). My own contribution (skill step 3) was to read all five sources in plan order and reason about the linked journey, prerequisites, and draft status — that reasoning is labeled as such and never dressed up as tested.
• Coverage & limits (stated honestly):
• Quest 1 (container-fundamentals) is uncovered — the engine errored at max_turns (40) with no verdict. It is reasoned only; its 0.0/fail in the raw JSON is an engine error, not a real score, and I have not counted it as a tested failure. Recommend re-running it alone with a higher turn budget.
• This is window 1 of 2 of an 8-quest level; 3 quests were out of scope this run.
• macOS/Windows platform branches were reasoned/skipped (Linux-only sandbox); network-dependent steps (bundle install, git push to a placeholder remote) were skipped as expected.
• Verdict basis: overall fail reflects 0 pass · 2 warn · 3 fail with two published/foundational quests warning-level and two draft quests failing outright, plus the ungraded foundation. Engine spend: $3.4715 across the run.
• Confidence: High on the four scored quests (hands-on, reproduced defects quoted verbatim). Low on quest 1 (no evidence — read-only). This report is self-contained; a maintainer can act on §Issues without re-reading the raw evidence.