diff --git a/package/calendar-plugin-0.1.15.manifest.sha256 b/package/calendar-plugin-0.1.15.manifest.sha256
new file mode 100644
index 0000000..fb05654
--- /dev/null
+++ b/package/calendar-plugin-0.1.15.manifest.sha256
@@ -0,0 +1,20 @@
+ca4806cd3e7827b9666e6929cbcae8f3e2eba87e499f7dd7008d8edf2fcc774e  staging/calendar-plugin/calendar-plugin.php
+1daa5861c0d10258c0d16c5c88c1a18fb3c8df7b590f7facfe7c28f678643bdb  staging/calendar-plugin/src/Contracts/AuthAdapterInterface.php
+25cff4b0fc2ee292b53c152edd083c6af66200a25eec28f8dfce37d126a8892d  staging/calendar-plugin/src/Contracts/DatabaseAdapterInterface.php
+4f0f4caa5ac98499854336f5b74af55ce889653f3956e5df10910f869a23fdba  staging/calendar-plugin/src/Contracts/HttpAdapterInterface.php
+15e8f58c7360d6cd0c76c945abfeb026f8278d40b330e99b67955eb2f85f5563  staging/calendar-plugin/src/Contracts/OptionsAdapterInterface.php
+47d55e845b8a696c55fa86f597bb2760b6e35d974b70f365593d38697ef398c8  staging/calendar-plugin/src/Domain/CalDavService.php
+4dc3337761c97aa550896fcc377aaab8338c598f39e489742dacbfd20e1a71b1  staging/calendar-plugin/src/Domain/EventService.php
+412a22ecd910535c7ace2549a86eacf08cc9cd824f1767e60116d8593355f57f  staging/calendar-plugin/src/Domain/IcsService.php
+5f7fb1f8c00136ad2c4a2dc8b909dabf6494a194b09aa73557a4bf68d73f4ed2  staging/calendar-plugin/src/Domain/RecurrenceExpander.php
+20ee26671fd934f36e97606cfd2ec1d5101ac8064594989bc955bf805fae2502  staging/calendar-plugin/src/Domain/SettingsService.php
+9956790a5d62f5798f3ec15fc507fb04f33e01fd27969db09e91a6d1b41cd33f  staging/calendar-plugin/src/Domain/UserService.php
+5aaac066919b60461bde2e96cbfb4de66a5a28e89d2a61b78f0e2d346f23395b  staging/calendar-plugin/src/Infrastructure/ServiceContainer.php
+70334df8ca06c8fe61d81f24cb0d8f19285180f9950054bd86af0083adf8b4c8  staging/calendar-plugin/src/Infrastructure/WordPress/MigrationManager.php
+8e6c95e9e1c051606e66d95cf0bcf92b2ca087bc491f32ab4921e0898cf77b81  staging/calendar-plugin/src/Infrastructure/WordPress/WordPressAuthAdapter.php
+68c0ca15ad2c8b6363a2578b85f8daf0d3a094e612a120a2cdd2a2bfd8fe5e3c  staging/calendar-plugin/src/Infrastructure/WordPress/WordPressDatabaseAdapter.php
+8da85db3c1e69c2c5f01aaa2f558aa8f0323446d8af0aec5b34d4607cd4afe1b  staging/calendar-plugin/src/Infrastructure/WordPress/WordPressHttpAdapter.php
+cf9fddcecb07af2c03ad2c0e448be12a6b45dd936efc8bc1fd46a52b4af864ea  staging/calendar-plugin/src/Infrastructure/WordPress/WordPressOptionsAdapter.php
+ffc7c3eef8f3ed0873b5f614765219925d07c24ffd6ffa7422a3d862a7342450  staging/calendar-plugin/src/Plugin.php
+4e6930c79d9ce1045be6863ddd7546e19f7ef7e839d41a41014a3efb3183eaf0  staging/calendar-plugin/src/bootstrap.php
+893c6df62beed87a981d372c473e5012d1b5d1c254d23b39cda44ae8a08cd16c  staging/calendar-plugin/uninstall.php
diff --git a/package/calendar-plugin-0.1.15.zip b/package/calendar-plugin-0.1.15.zip
new file mode 100644
index 0000000..1e69edd
Binary files /dev/null and b/package/calendar-plugin-0.1.15.zip differ
diff --git a/requirements/api.md b/requirements/api.md
index 075a6d6..43c28de 100644
--- a/requirements/api.md
+++ b/requirements/api.md
@@ -36,7 +36,7 @@ This document covers:
 ### Create Event
 - `POST /events`
 - Requires calendar write capability.
-- Request body supports fields in `requirements/editor.md`.
+- Request body supports fields in `requirements/editor.md`, including `visibility` (`public`/`private`).
 - Response: `201` with created event payload and identifiers.
 
 ### List Events
@@ -70,6 +70,16 @@ This document covers:
 - Must not split the underlying recurring series.
 - Response: `204` on success.
 
+
+## Public Read Endpoints and Privacy Redaction
+
+Public-read endpoints (for example `/public/events`, `/public/sidebar-events`, and ICS feed generation paths) must apply privacy masking for `private` events:
+
+- Event date/time placement remains unchanged.
+- Title is replaced with `Private Event`.
+- Description/location/category and other non-time content are omitted from public responses.
+- Logged-in write-capable UI and authenticated CalDAV/API reads continue to receive full event details.
+
 ## CalDAV User Workflow Endpoints
 
 ### Register
@@ -139,3 +149,4 @@ Acceptance should verify:
 - Validation and error payloads are consistent.
 - Single-occurrence delete creates recurrence exception rather than split series.
 - Authz rules enforce role/access constraints.
+- Privacy redaction rules are enforced consistently across public API payloads and ICS output.
diff --git a/requirements/authorization.md b/requirements/authorization.md
index 85e826e..14d3a25 100644
--- a/requirements/authorization.md
+++ b/requirements/authorization.md
@@ -40,9 +40,15 @@ This document covers:
 
 ### ICS Access
 - Public ICS endpoint visibility is governed by setup configuration.
-- If endpoint is public: `public` may read only approved public events.
+- If endpoint is public: `public` may read public events and redacted private events.
 - If endpoint requires auth: enforce configured auth policy consistently.
 
+### Privacy Visibility Rules
+- `public` viewers (not logged in) see full details for public events.
+- `public` viewers see private events in normal date/time positions with title `Private Event` and no other event content.
+- Logged-in write-capable users and authenticated CalDAV users may view full details for both public and private events.
+- Privacy masking applies consistently across public calendar page views, sidebar, and public ICS output.
+
 ## Ownership and Scope Rules
 - CalDAV users operate against the single shared `public` calendar collection.
 - Access control is enforced by account approval state (`pending_approval` vs `active`) rather than per-user private calendars.
diff --git a/requirements/caldav.md b/requirements/caldav.md
index 7d267dc..9284547 100644
--- a/requirements/caldav.md
+++ b/requirements/caldav.md
@@ -74,6 +74,7 @@ The endpoint must support these operations at minimum.
 ### Create and Update
 - `PUT`: create new event resource or replace an existing event resource.
 - `PUT` updates must preserve recurrence/exception semantics from iCalendar input.
+- CalDAV clients (including Thunderbird) must be able to read current event privacy and update it on edit (for example via `CLASS`).
 - Write operations must require approved authenticated access.
 
 ### Delete
@@ -101,6 +102,12 @@ Minimum mapping expectations:
 - Recurrence rules -> `RRULE`
 - Recurrence exceptions -> `EXDATE` and/or additional `VEVENT` with matching `UID` plus `RECURRENCE-ID`
 
+Privacy visibility mapping:
+
+- Event visibility must round-trip through CalDAV/iCalendar semantics (for example `CLASS:PUBLIC` and `CLASS:PRIVATE` where supported).
+- Authenticated CalDAV users must receive full event content for both public and private events.
+- CalDAV feeds are not subject to the public redaction model used by anonymous web/ICS surfaces.
+
 Recurrence behavior:
 
 - Series-level recurrence remains a single logical event sequence keyed by `UID`.
@@ -188,3 +195,4 @@ Acceptance should verify:
 - Sync collection reports provide incremental changes.
 - Recurring-event single-occurrence delete results in exception representation, not sequence split.
 - Returned iCalendar validates against RFC 5545 expectations and is accepted by target clients.
+- Privacy values round-trip through CalDAV edit flows (including Thunderbird) without losing event detail fidelity.
diff --git a/requirements/caldav_endpoints.md b/requirements/caldav_endpoints.md
index 07770e0..f89084a 100644
--- a/requirements/caldav_endpoints.md
+++ b/requirements/caldav_endpoints.md
@@ -96,6 +96,7 @@ If a report is unsupported for a resource, server returns standards-appropriate
 
 ## Content Handling
 - Event objects use `text/calendar` payloads with RFC 5545-compatible `VCALENDAR`.
+- Authenticated CalDAV object responses (`GET`, `REPORT`, `calendar-multiget`) return full event details for both public and private events.
 - Unsupported component types should be rejected unless explicitly mapped.
 - Server should normalize line endings/content as required by iCalendar compatibility.
 
diff --git a/requirements/data.md b/requirements/data.md
index 3c838a5..8b0e186 100644
--- a/requirements/data.md
+++ b/requirements/data.md
@@ -33,6 +33,7 @@ Requirements:
 The stored model must support these fields (direct columns or normalized equivalents):
 
 - Event identifier (internal primary key)
+- `visibility` (`public` or `private`)
 - `title`
 - `location`
 - `category`
@@ -55,6 +56,7 @@ The stored model must support these fields (direct columns or normalized equival
 - Data model must support efficient retrieval by date range for day/week/month/year UI windows.
 - Data model must support generation of recurrence occurrences for both web UI and ICS output.
 - Queries for public UI must return only intended public event data.
+- Queries for public UI/ICS/sidebar must include private events with privacy redaction (time/date shown, non-time content masked).
 
 ## Local Testing Data Requirements
 The local compatibility-harness test environment must support deterministic data setup and teardown.
diff --git a/requirements/data_schema.md b/requirements/data_schema.md
index fda8f31..a5a913b 100644
--- a/requirements/data_schema.md
+++ b/requirements/data_schema.md
@@ -22,6 +22,7 @@ This document covers:
 Required fields:
 - `id` (PK)
 - `uid` (stable iCalendar UID)
+- `visibility` (`public`, `private`; default `public`)
 - `title`
 - `description`
 - `location`
@@ -42,6 +43,11 @@ Constraints:
 - `title`, `start_datetime` required
 - `end_datetime >= start_datetime`
 - recurrence fields internally consistent
+- `visibility` must be one of the supported enum values
+
+Privacy semantics:
+- `private` events are stored with full details.
+- Public-facing renderers (public ICS/public calendar/sidebar) must apply redaction rules at read time, not by destructively altering stored event data.
 
 ### Recurrence Exceptions
 Required fields:
diff --git a/requirements/editor.md b/requirements/editor.md
index 34ec166..4d4d94b 100644
--- a/requirements/editor.md
+++ b/requirements/editor.md
@@ -35,6 +35,7 @@ Behavior requirements:
 Supported fields:
 
 - `title` (required)
+- `visibility` (`public` or `private`; default `public`)
 - `description`
 - `location`
 - `category`
@@ -55,6 +56,7 @@ UI behavior requirements:
 - Time controls hide when `all_day_event` is selected.
 - Floating/persistent labels keep field purpose visible.
 - Internal event ID is hidden from users.
+- Editor must provide a control to mark events as `public` or `private`.
 
 ## Recurrence Model
 Supported `repeat_type` values:
@@ -91,3 +93,4 @@ Acceptance should verify:
 - Deleting one occurrence creates an exception while preserving the series.
 - Monthly ordinal patterns save and reload correctly.
 - Validation blocks invalid start/end ranges.
+- Privacy visibility setting saves and reloads correctly.
diff --git a/requirements/ics.md b/requirements/ics.md
index d07fbde..9d96f8d 100644
--- a/requirements/ics.md
+++ b/requirements/ics.md
@@ -49,6 +49,7 @@ Field mapping requirements:
 - Plugin end date/time -> `DTEND`
 - Plugin category -> `CATEGORIES`
 - Stable unique event identifier -> `UID`
+- Plugin `visibility` controls public-output masking for private events
 - Last update timestamp -> `DTSTAMP`
 
 Additional mapping guidance:
@@ -57,6 +58,15 @@ Additional mapping guidance:
 - Timed events must use `DTSTART;TZID=Europe/London` and `DTEND;TZID=Europe/London`.
 - `DTEND` must represent a valid end boundary and not precede `DTSTART`.
 
+
+Privacy behavior:
+
+- `public` events are exported with normal mapped content.
+- `private` events remain present in the feed at normal date/time positions, but with redaction:
+  - `SUMMARY` must be `Private Event`
+  - `DTSTART`/`DTEND` remain populated
+  - `DESCRIPTION`, `LOCATION`, and `CATEGORIES` must be omitted from public ICS output
+
 ## Recurrence Mapping
 Recurring entries should be represented with `RRULE` where possible.
 
@@ -84,7 +94,7 @@ If specific recurrence shapes cannot be represented in a single RRULE, plugin ma
 - Generation errors should fail safely with observable error handling.
 
 ## Security and Privacy
-- Export must include only events intended for public/user-facing distribution.
+- Export must enforce visibility policy: private events are included with redacted content in public ICS output.
 - Internal/admin-only metadata must not leak into ICS properties.
 
 ## Verification Requirements
diff --git a/requirements/ics_endpoint.md b/requirements/ics_endpoint.md
index b252bbf..dad6a48 100644
--- a/requirements/ics_endpoint.md
+++ b/requirements/ics_endpoint.md
@@ -26,13 +26,14 @@ This document covers:
 
 ## Access Policy
 - Access mode is configurable in `Setup`:
-  - `public_read`: endpoint accessible without auth, only public events included
+  - `public_read`: endpoint accessible without auth; includes both public and private events, with private events redacted
   - `authenticated_read`: endpoint requires authenticated access
 - Default mode: `public_read` unless overridden by policy requirements.
 
 ## Data Scope
 - ICS output includes only events intended for the selected endpoint audience.
 - Internal/admin-only metadata must never appear in output.
+- In `public_read` mode, private events remain in timeline position but expose only date/time and the title `Private Event`.
 - Recurrence and exception semantics follow `requirements/ics.md` and `requirements/recurrence_exceptions.md`.
 
 ## Stability and Subscription
diff --git a/requirements/web-ui.md b/requirements/web-ui.md
index c4f5589..efbc96b 100644
--- a/requirements/web-ui.md
+++ b/requirements/web-ui.md
@@ -83,6 +83,16 @@ Minimum display requirements:
 - Category (if provided)
 - Description excerpt/summary (if configured for display)
 
+Privacy display rules:
+
+- Public events render full details per normal display rules.
+- Private events remain visible in chronological position for all viewers.
+- In public (not logged-in) UI and sidebar rendering, private events must display:
+  - Title as `Private Event`
+  - Date/time fields as normal
+  - No location/category/description content
+- In logged-in write-capable UI, private events display full details.
+
 ## Web Event Editing UX (Authorized Users)
 Where the viewer has write permission, the web UI must support event creation/editing.
 
@@ -94,6 +104,7 @@ Requirements:
 - Irrelevant recurrence fields must be hidden based on current recurrence selections.
 - Form controls use persistent inline/floating labels so field purpose remains visible after input.
 - Event ID must not be shown in the UI.
+- Create/edit panel must show current privacy (`public`/`private`) and allow changing it before save.
 - `location` and `category` should be rendered on one row.
 - `start date/time` and `end date/time` should be rendered on one row.
 - `repeat type` and `every` interval should be rendered on one row.
@@ -112,6 +123,7 @@ Requirements:
 ## Login and Access Modes
 - `/calendar` must support two user modes: public (not logged in) and logged-in.
 - Public mode is read-only.
+- In public mode, private events are redacted (title `Private Event`; time preserved; non-time fields hidden).
 - A `Login` action must open an in-page dialog.
 - Login dialog must support credential login.
 - Login dialog must support registration (registration is a request for approval/write access).
@@ -149,3 +161,4 @@ Acceptance should verify:
 - All five view modes are selectable and render expected event windows.
 - Empty-state behavior is clear and user-friendly.
 - ICS link is present and returns valid calendar payload.
+- Privacy redaction behavior is correct in public views, sidebar, and logged-in views.
diff --git a/scripts/deploy_remote.sh b/scripts/deploy_remote.sh
new file mode 100755
index 0000000..58aac1f
--- /dev/null
+++ b/scripts/deploy_remote.sh
@@ -0,0 +1,137 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
+ENV_FILE="${ROOT_DIR}/credentials/.env"
+
+if [[ -f "${ENV_FILE}" ]]; then
+  # shellcheck disable=SC1090
+  source "${ENV_FILE}"
+fi
+
+ARTIFACT=""
+WP_ROOT="${REMOTE_WP_PATH:-/var/www/wordpress}"
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --artifact)
+      ARTIFACT="${2:-}"
+      shift 2
+      ;;
+    --wp-root)
+      WP_ROOT="${2:-}"
+      shift 2
+      ;;
+    --help|-h)
+      cat <<'USAGE'
+Deploy a plugin artifact to remote WordPress.
+
+Usage:
+  scripts/deploy_remote.sh [--artifact /abs/or/relative/path.zip] [--wp-root /var/www/wordpress]
+
+Defaults:
+- Artifact: latest ./package/calendar-plugin-*.zip
+- Remote host settings from credentials/.env
+
+This script enforces ownership:
+- chown -R www-data:www-data <remote plugin dir>
+USAGE
+      exit 0
+      ;;
+    *)
+      echo "[deploy] unknown argument: $1" >&2
+      exit 2
+      ;;
+  esac
+done
+
+if [[ -z "${ARTIFACT}" ]]; then
+  ARTIFACT="$(ls -1 "${ROOT_DIR}/package/calendar-plugin-"*.zip 2>/dev/null | sort -V | tail -n1 || true)"
+fi
+
+if [[ -z "${ARTIFACT}" ]]; then
+  echo "[deploy] no artifact found; run scripts/package_plugin.sh first" >&2
+  exit 1
+fi
+
+if [[ "${ARTIFACT}" != /* ]]; then
+  ARTIFACT="${ROOT_DIR}/${ARTIFACT#./}"
+fi
+
+if [[ ! -f "${ARTIFACT}" ]]; then
+  echo "[deploy] artifact not found: ${ARTIFACT}" >&2
+  exit 1
+fi
+
+MANIFEST="${ARTIFACT%.zip}.manifest.sha256"
+if [[ ! -f "${MANIFEST}" ]]; then
+  echo "[deploy] warning: manifest not found beside artifact (${MANIFEST}); continuing" >&2
+fi
+
+required=(REMOTE_HOST REMOTE_PORT REMOTE_USER REMOTE_SSH_KEY_PATH REMOTE_APP_DIR REMOTE_WP_CLI WP_URL)
+for key in "${required[@]}"; do
+  if [[ -z "${!key:-}" ]]; then
+    echo "[deploy] missing required env var: ${key}" >&2
+    exit 1
+  fi
+done
+
+SSH_KEY_PATH="${REMOTE_SSH_KEY_PATH}"
+if [[ "${SSH_KEY_PATH}" != /* ]]; then
+  SSH_KEY_PATH="${ROOT_DIR}/${SSH_KEY_PATH}"
+fi
+
+if [[ ! -f "${SSH_KEY_PATH}" ]]; then
+  echo "[deploy] ssh key not found: ${SSH_KEY_PATH}" >&2
+  exit 1
+fi
+
+artifact_base="$(basename -- "${ARTIFACT}")"
+stage_name="${artifact_base%.zip}"
+STAGE_DIR="/tmp/${stage_name}"
+
+SSH=(ssh -F /dev/null -i "${SSH_KEY_PATH}" -p "${REMOTE_PORT}" -o StrictHostKeyChecking=accept-new "${REMOTE_USER}@${REMOTE_HOST}")
+RSYNC=(rsync -avz --delete -e "ssh -F /dev/null -i ${SSH_KEY_PATH} -p ${REMOTE_PORT} -o StrictHostKeyChecking=accept-new")
+
+echo "[deploy] staging on remote: ${STAGE_DIR}"
+"${SSH[@]}" "mkdir -p '${STAGE_DIR}'"
+
+if [[ -f "${MANIFEST}" ]]; then
+  "${RSYNC[@]}" "${ARTIFACT}" "${MANIFEST}" "${REMOTE_USER}@${REMOTE_HOST}:${STAGE_DIR}/"
+else
+  "${RSYNC[@]}" "${ARTIFACT}" "${REMOTE_USER}@${REMOTE_HOST}:${STAGE_DIR}/"
+fi
+
+"${SSH[@]}" "set -euo pipefail; rm -rf '${STAGE_DIR}/extracted'; mkdir -p '${STAGE_DIR}/extracted'; unzip -q '${STAGE_DIR}/${artifact_base}' -d '${STAGE_DIR}/extracted'; test -f '${STAGE_DIR}/extracted/calendar-plugin/calendar-plugin.php'"
+"${SSH[@]}" "set -euo pipefail; rsync -a --delete '${STAGE_DIR}/extracted/calendar-plugin/' '${REMOTE_APP_DIR}/'"
+"${SSH[@]}" "set -euo pipefail; chown -R www-data:www-data '${REMOTE_APP_DIR}'"
+"${SSH[@]}" "set -euo pipefail; '${REMOTE_WP_CLI}' --path='${WP_ROOT}' plugin activate calendar-plugin --allow-root >/dev/null 2>&1 || true"
+
+# Exact-match style checksum dry-run check
+"${SSH[@]}" "set -euo pipefail; rsync -avznc --delete '${STAGE_DIR}/extracted/calendar-plugin/' '${REMOTE_APP_DIR}/' >/tmp/codex_rsync_check.out; if grep -Eq '^[^./]|^\./' /tmp/codex_rsync_check.out; then cat /tmp/codex_rsync_check.out; exit 1; fi"
+
+# Ownership sanity check: must be zero mismatches
+non_owned="$("${SSH[@]}" "set -euo pipefail; find '${REMOTE_APP_DIR}' \( ! -user www-data -o ! -group www-data \) | wc -l")"
+if [[ "${non_owned}" != "0" ]]; then
+  echo "[deploy] ownership check failed: ${non_owned} path(s) not owned by www-data:www-data" >&2
+  exit 1
+fi
+
+# Resolve slug for endpoint checks
+url_slug="$("${SSH[@]}" "'${REMOTE_WP_CLI}' --path='${WP_ROOT}' option get calendar_plugin_url_slug --allow-root 2>/dev/null || true" | tr -d '\r' | tail -n1)"
+if [[ -n "${url_slug}" ]]; then
+  ICS_URL="${WP_URL%/}/${url_slug}/calendar.ics"
+  CALDAV_URL="${WP_URL%/}/${url_slug}/caldav/"
+else
+  ICS_URL="${WP_URL%/}/calendar.ics"
+  CALDAV_URL="${WP_URL%/}/caldav/"
+fi
+
+health_code="$(curl -sS -o /tmp/codex_health.out -w '%{http_code}' "${WP_URL%/}/wp-json/calendar/v1/health" || true)"
+ics_code="$(curl -sS -o /tmp/codex_ics.out -w '%{http_code}' "${ICS_URL}" || true)"
+caldav_code="$(curl -sS -o /tmp/codex_caldav.out -w '%{http_code}' "${CALDAV_URL}" || true)"
+
+echo "[deploy] plugin deployed: ${artifact_base}"
+echo "[deploy] ownership: www-data:www-data (verified)"
+echo "[deploy] checks: health=${health_code} ics=${ics_code} caldav_unauth=${caldav_code}"
+echo "[deploy] urls: ${ICS_URL} ${CALDAV_URL}"
diff --git a/scripts/package_plugin.sh b/scripts/package_plugin.sh
new file mode 100755
index 0000000..054db76
--- /dev/null
+++ b/scripts/package_plugin.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
+ENV_FILE="${ROOT_DIR}/credentials/.env"
+
+if [[ -f "${ENV_FILE}" ]]; then
+  # shellcheck disable=SC1090
+  source "${ENV_FILE}"
+fi
+
+VERSION=""
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --version)
+      VERSION="${2:-}"
+      shift 2
+      ;;
+    --help|-h)
+      cat <<'USAGE'
+Create a plugin package artifact from ./code.
+
+Usage:
+  scripts/package_plugin.sh [--version X.Y.Z]
+
+Notes:
+- If --version is not provided, reads Version from code/calendar-plugin.php.
+- Writes zip + manifest to ./package.
+USAGE
+      exit 0
+      ;;
+    *)
+      echo "[package] unknown argument: $1" >&2
+      exit 2
+      ;;
+  esac
+done
+
+if [[ -z "${VERSION}" ]]; then
+  VERSION="$(sed -n 's/^ \* Version: \(.*\)$/\1/p' "${ROOT_DIR}/code/calendar-plugin.php" | head -n1 | tr -d '[:space:]')"
+fi
+
+if [[ -z "${VERSION}" ]]; then
+  echo "[package] unable to detect plugin version from code/calendar-plugin.php" >&2
+  exit 1
+fi
+
+SLUG="calendar-plugin"
+PACKAGE_DIR="${ROOT_DIR}/package"
+STAGING_DIR="${PACKAGE_DIR}/staging/${SLUG}"
+ARTIFACT="${PACKAGE_DIR}/${SLUG}-${VERSION}.zip"
+MANIFEST="${PACKAGE_DIR}/${SLUG}-${VERSION}.manifest.sha256"
+
+mkdir -p "${PACKAGE_DIR}/staging"
+rm -rf "${STAGING_DIR}"
+mkdir -p "${STAGING_DIR}"
+
+rsync -a --delete "${ROOT_DIR}/code/" "${STAGING_DIR}/"
+
+(
+  cd "${PACKAGE_DIR}/staging"
+  zip -qr "${ARTIFACT}" "${SLUG}"
+)
+
+(
+  cd "${STAGING_DIR}"
+  find . -type f -print0 | sort -z | xargs -0 sha256sum
+) > "${MANIFEST}"
+
+echo "[package] created artifact: ${ARTIFACT}"
+echo "[package] created manifest: ${MANIFEST}"