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add role-aware Epi assistant prompts Add verified June knowledge, guest/member/admin Copilot profiles, profile-isolated session recovery, animated Epi greetings, and a single authoritative runtime config workflow for inference. Co-authored-by: Copilot <[email protected]>
author MrJuneJune <me@mrjunejune.com>
date Fri, 07 Aug 2026 10:50:30 -0700
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children
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1 ---
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2 name: zenbu-bazel-c
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3 description: Use this skill when working anywhere in the Zenbu monorepo, especially C/C++ libraries, Bazel targets, Mercurial workflow, shared assets, or cross-project dependencies.
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4 ---
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5
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6 # Zenbu Bazel/C Monorepo
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7
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8 Use this skill to orient yourself before changing first-party code in this workspace.
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9
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10 ## What this repo is
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11
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12 Zenbu is a Mercurial/Bazel monorepo for reusable C libraries, web servers, frontend bundles, and experiments. Prefer first-party libraries over adding new external dependencies.
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13
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14 Important first-party packages:
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15
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16 - `dowa`: core C utilities, arena allocation, strings, math, dynamic arrays/hash maps.
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17 - `seobeo`: HTTP/TCP/WebSocket/networking library.
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18 - `mrjunejune`: personal website and production server.
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19 - `hg-web`: Mercurial repository browser served by a C backend.
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20 - `markdown_converter`: markdown-to-HTML C/WASM converter.
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21 - `deita`: SQLite wrapper library.
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22 - `s3`: S3 presigned upload helper.
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23 - `gui_ze`: Bazel macros for bundling/copying web assets.
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24 - `design_system`: light-DOM Web Components, shared CSS tokens, and a Seobeo
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25 component catalog.
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26
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27 Avoid broad searches in `third_party/`, Bazel output directories, virtualenvs, `node_modules`, and generated bundles unless the task specifically requires them.
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28
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29 For cross-codebase audits, inspect `BUILD` files and Bazel dependencies first.
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30 Use the dependency graph to identify actual first-party consumers before broad
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31 text search, then audit only those targets and their transitive owners.
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32
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33 ## Build and test commands
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34
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35 Use Bazel targets from the repository root:
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36
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37 ```bash
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38 bazel build //seobeo:seobeo
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39 bazel test //seobeo:seobeo_client_test
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40 bazel test //seobeo:seobeo_websocket_test
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41 bazel test //seobeo:seobeo_websocket_server_test
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42
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43 bazel build //mrjunejune:mrjunejune_server
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44 bazel test //mrjunejune/test:integration_test
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45
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46 bazel build //hg-web:hg_web_server
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47 ```
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48
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49 For debug builds, prefer existing debug targets where present:
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50
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51 ```bash
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52 bazel build //mrjunejune:mrjunejune_server_debug -c dbg
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53 bazel build //seobeo:seobeo_debug -c dbg
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54 ```
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55
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56 If a change only touches docs or assistant skill files, Bazel verification is not required.
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57
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58 ### Parallel test structure
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59
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60 - Do not let unrelated browser, integration, or end-to-end concerns accumulate
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61 in one long serial test process.
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62 - Split slow suites into independently runnable Bazel test targets by concern.
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63 Use a `test_suite` target to preserve a single aggregate command.
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64 - Run related targets in one `bazel test` invocation so Bazel schedules them in
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65 parallel. Do not loop over targets or invoke Bazel separately for each test.
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66 - Parallel shards must use independent ports, temporary directories, databases,
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67 and mutable fixtures. Never share process-global test state between shards.
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68 - During iteration, run only the narrow shard for the changed behavior; run the
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69 aggregate suite before completion.
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70
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71 ### Runtime configuration
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72
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73 - Each service uses one ignored, documented config file as its normal runtime
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74 configuration source. Do not introduce `.env` files or require users to
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75 export shell variables before ordinary Bazel run/deploy commands.
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76 - Committed config templates contain placeholders only. Real config and secrets
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77 stay ignored and outside immutable production bundles.
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78 - Supervisors may propagate parsed config to child processes through their
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79 process environment as an internal implementation detail. Environment
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80 overrides are compatibility/testing hooks, not the primary user workflow.
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81
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82 ## Coding conventions to preserve
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83
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84 - Prefer Dowa's integer and boolean aliases (`uint8`, `uint16`, `uint32`,
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85 `uint64`, `int8`, `int16`, `int32`, `int64`, and `boolean`) plus
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86 `TRUE`/`FALSE` in first-party C. Do not introduce `<stdint.h>` `_t` aliases
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87 or `<stdbool.h>` `bool` when a Dowa type already expresses the value.
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88 - C code generally uses `Dowa_Arena` for request-scoped allocations.
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89 - An arena owns every pointer returned by `Dowa_Arena_Allocate`, aligned arena
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90 allocation, arena string helpers, and arena array/hash-map macros. Never pass
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91 those pointers to libc `free()`, `Dowa_Free`, or an element-level destroy
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92 function.
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93 - Release a locally created arena exactly once with `Dowa_Arena_Free()` on
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94 every return path. Do not release a borrowed request arena; its owner must
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95 free it.
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96 - Prefer `Dowa_Free` over raw libc `free()` for separately heap-allocated
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97 first-party pointers. Keep the allocation source explicit when heap and arena
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98 ownership coexist in one function.
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99 - HTTP responses are usually `Seobeo_Request_Entry *resp = NULL` maps filled with `Dowa_HashMap_Push_Arena`.
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100 - Route handlers return response maps; streaming handlers receive `Seobeo_Handle *` directly.
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101 - Existing code favors explicit status/content-type/body response fields.
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102 - Use `Seobeo_Log` for seobeo-aware logging instead of introducing another logger.
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103 - Keep Bazel dependencies precise. Add deps to the smallest target that needs them.
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104 - Preserve platform-aware `select()` aliases for macOS/Linux targets.
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105
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106 ## Mercurial workflow
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107
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108 This repo is not a Git repository. Use Mercurial commands if you need VCS status:
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109
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110 ```bash
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111 hg status
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112 hg diff
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113 ```
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114
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115 Do not create Git-specific metadata or workflows unless explicitly asked.